Designer Clothing Glossary

Down Insulation

Down is the soft, fluffy undercoat plumage from waterfowl — geese or ducks — located beneath the tougher exterior feathers. Down clusters trap air in microscopic pockets created by thousands of tiny fibres crisscrossing in every direction, delivering an unmatched warmth-to-weight ratio. Down used in clothing is a byproduct of the meat industry.

What Is Down Insulation and How Does It Work?

Each down cluster is a three-dimensional structure with dozens of filaments radiating outward from a central point, called the quill. These filaments interlock with neighbouring clusters, creating still-air pockets that resist heat transfer. The more air a given weight of down can trap, the better it insulates — which is exactly what fill power measures.

Down-to-feather ratios matter because flat feathers add weight without trapping much air. A 90/10 mix (90% down, 10% feather) insulates significantly better than 70/30 at the same fill weight. According to Allied Feather and Down, premium brands specify 800+ fill power for ultralight applications where every gram counts.

Is Down Worth It in British Weather?

Down excels when dry. In a cold, dry winter or layered under a waterproof shell, down delivers more warmth per gram than any synthetic. The catch is moisture — wet down clumps together, collapsing those air pockets and losing insulation value rapidly. For unpredictable British weather, look for hydrophobic-treated down or pair a down mid-layer with a waterproof shell. For sustained wet conditions without a shell, synthetic alternatives like PrimaLoft® or ThermoBall™ retain warmth better when damp.

How Do You Care for Down Clothing?

Fill Power

Fill power measures down quality by calculating the volume one ounce of down occupies in cubic inches at maximum loft. An 800-fill-power down lofts to 800 cubic inches per ounce — meaning it traps more air per gram than 600-fill down, delivering superior warmth at lower weight.

Does Higher Fill Power Always Mean Warmer?

Not on its own. Fill power measures quality (how efficiently down traps air), but fill weight (total grams of down in the garment) determines actual warmth. A 600-fill jacket with 200g of down can outperform an 800-fill jacket with only 80g. Think of fill power as efficiency — higher numbers mean you need less down for the same warmth, resulting in lighter, more packable garments.

How Does Fill Power Affect Price?

Higher fill power commands a price premium because it requires larger, more mature down clusters that are rarer and more difficult to source. However, the investment pays back in wearability — an 800-fill jacket packs smaller, weighs less, and lasts longer than a budget equivalent stuffed with extra low-quality down to achieve the same warmth.

French Terry

French Terry is a knit fabric with a smooth face on one side and looped pile on the reverse. Also called loopback cotton, the construction uses circular knit machines with two sets of warp threads at different tensions — one loose, one regular — creating the characteristic loop structure on the inside.

What Makes French Terry Different from Fleece?

The loop structure provides moisture-wicking capability without the weight of brushed fleece. French Terry offers breathability for year-round wear while maintaining warmth from trapped air pockets. Unlike brushed fleece, the loops stay unbrushed, producing a lighter, smoother interior that still holds heat. The fabric resists creasing due to its knitted construction and natural stretch.

How Do You Wash French Terry?

Machine wash at 30–40°C, inside out to protect the smooth face. Tumble dry on low or line dry. Avoid high heat — cotton-blend French Terry can shrink, especially on first wash. Pre-washed garments from premium brands have already accounted for shrinkage.

Polartec®

Polartec® is a technical fabric manufacturer that pioneered synthetic fleece in 1981. The company produces over 300 fabric technologies spanning fleece insulation, base layers, and weather protection.

What Are the Different Types of Polartec®?

PrimaLoft®

PrimaLoft® is a synthetic microfibre insulation originally developed for the United States Army in 1983. The design brief required performance equivalent to goose down — matching weight, compressibility, and warmth — while retaining 85–95% of insulation value when wet.

How Does PrimaLoft® Work?

Ultra-fine synthetic fibres trap body heat in microscopic air pockets, similar to down but without the moisture vulnerability. PrimaLoft fibres receive permanent water-resistant treatment, so the air pockets survive moisture exposure and continue insulating. The Gold Down Blend variant combines 70% hydrophobically treated goose down with 30% PrimaLoft fibre, delivering warmth equivalent to 750 fill power down with water resistance.

Is PrimaLoft® Better Than Down?

It depends on conditions. Down still wins on warmth-to-weight ratio in dry conditions — nothing synthetic matches 800+ fill power goose down gram-for-gram. PrimaLoft wins when moisture is a factor, drying faster and maintaining insulation when damp. For British weather where rain is always a possibility, PrimaLoft offers more reliable warmth without requiring a waterproof shell.

PrimaLoft® Active

PrimaLoft® Active is a synthetic insulation engineered for high-output activities requiring temperature regulation during variable exertion levels. Unlike standard insulations that trap heat continuously, Active variants allow excess warmth and moisture to escape during intense movement while maintaining thermal protection during rest periods.

How Does PrimaLoft® Active Differ from Standard PrimaLoft®?

Standard PrimaLoft insulates consistently regardless of activity level. Active uses a proprietary manufacturing process that locks ultra-fine fibres in place, preventing migration through lightweight shell fabrics. This enables pairing with highly breathable, open-weave materials that let heat escape during exertion — something impossible with standard insulations that would migrate through the gaps.

Who Should Choose PrimaLoft® Active?

Anyone doing stop-start activities in cold weather. Ski touring, winter running, cycling, cold-weather hiking — situations where conventional insulation causes overheating during exertion and chilling during breaks. If your activity level stays constant, standard insulation works fine. If it fluctuates, Active prevents the sweat-then-freeze cycle.

Therma Boost

Therma Boost is Sweaty Betty’s thermal performance fabric engineered for cold-weather training. The heavyweight heat tech yarn regulates body temperature during outdoor winter activities without restricting movement.

How Does Therma Boost Work?

The brushed fleece interior traps insulating air against the skin while the outer face provides wind resistance. Four-way stretch maintains full range of motion despite the heavier fabric weight. Moisture-wicking technology pulls sweat away from the body, preventing the post-exercise chill that occurs when damp fabric meets cold skin. The high elastane content ensures thermal protection does not compromise the sculpting and support properties Sweaty Betty is known for.

When Should You Wear Therma Boost?

Winter running, outdoor fitness classes, cold-weather hiking, or any time you need warmth with freedom to move. Therma Boost targets the gap between “too cold in standard leggings” and “too hot in full thermal layers.”

Thermal Insulation

Thermal insulation in textiles refers to the capacity to trap still air within fibre structures, creating barriers that slow heat transfer from the body to the environment. The principle is simple: still air is one of the best insulators available, and every insulation technology is ultimately a method of trapping it.

What Is the Best Type of Insulation?

There is no single best — each type suits different conditions. Down offers the highest warmth-to-weight ratio when dry, making it ideal for cold, dry environments or layered under a shell. Synthetic insulations like PrimaLoft and ThermoBall retain thermal properties when wet — critical for unpredictable British weather. Active insulation designs regulate temperature during variable-output activities, preventing the sweat-then-freeze cycle.

How Do You Choose Between Down and Synthetic?

ThermoBall™ Eco

ThermoBall™ Eco is The North Face’s synthetic insulation developed in partnership with PrimaLoft. Small, round synthetic fibre clusters mimic the structure of natural down, trapping heat within air pockets for warmth retention. The critical advantage over natural down: ThermoBall retains thermal properties when wet because synthetic fibres do not clump or collapse when exposed to water.

How Does ThermoBall™ Eco Compare to Real Down?

In dry conditions, natural down with 800+ fill power still outperforms ThermoBall on warmth-to-weight. But in damp or wet conditions — which is most of the British autumn and winter — ThermoBall maintains its insulation while down collapses. ThermoBall also compresses into hand pockets or stuff sacks for packability, and the synthetic clusters dry significantly faster than wet down.

Is ThermoBall™ Eco Genuinely Sustainable?

According to The North Face, the current generation uses 100% post-consumer recycled polyester, meaning the insulation is made entirely from recycled materials. The shell and lining also use recycled fabrics, and the DWR coating is non-PFC (fluorocarbon-free). It is not a perfect solution — synthetic fibres can shed microplastics during washing — but it represents a genuine improvement over virgin-material alternatives.

Thermore® Ecodown®

Thermore® Ecodown® is a synthetic thermal insulation developed by Milan-based Thermore, engineered to replicate the loft and warmth of natural down without animal-derived materials. The technology uses 100% post-consumer recycled PET bottles — each insulated garment diverts up to 10 bottles from landfill.

How Does Ecodown® Differ from Other Synthetic Insulations?

Most synthetic insulations lose loft after repeated washing as fibres clump together. Thermore’s proprietary multi-shape fibre structure resists this — Ecodown maintains its insulating properties through washing cycles where competitors degrade. The free fibre variant can be blown into baffles exactly like natural down, giving garments the same visual volume and puffiness as genuine down jackets.

Is Ecodown® Used in Brands We Stock?

Thermore supplies insulation to a wide range of fashion and outdoor brands. While not always explicitly labelled, Ecodown technology appears in many of the insulated jackets across premium fashion outerwear. The “2025 Fibers Sync” variant combines enhanced loft with improved resilience through interlocking fibre architecture — designed for garments that need to look plush and perform after years of wear.

UGGplush™

UGGplush™ is UGG’s advanced sustainable lining material combining UGGpure™ repurposed wool technology with TENCEL™ Lyocell fibres from Lenzing AG. The 50/50 blend of upcycled wool and plant-based lyocell, backed with recycled polyester, delivers the signature UGG comfort experience with significantly lower environmental impact.

What Does UGGplush™ Feel Like?

The combination of repurposed wool and plant-based lyocell creates the cosy, plush sensation UGG is known for. According to UGG, the TENCEL component improves microclimate conditions inside footwear and reduces odour development — so boots stay fresher for longer between wears. The sustainably-sourced wood pulp fibres are manufactured using Lenzing’s closed-loop process, recovering over 99% of water and solvent for reuse.

Is UGGplush™ Better Than Traditional Sheepskin Lining?

In terms of comfort, UGGplush is designed to match the plush feel of traditional lining. The environmental improvements are significant — replacing animal-derived and petroleum-based materials with plant-based and upcycled alternatives. Whether it is “better” depends on priorities: the feel is comparable, the footprint is lower.

UGGpure™

UGGpure™ is UGG’s proprietary repurposed wool technology and the brand’s largest material fibre by volume. The technology uses wool harvested from the production of UGG’s signature Twinface sheepskin, woven into a textile lining that delivers warmth and comfort at reduced environmental cost.

How Does UGGpure™ Work?

UGGpure captures wool fibres that would otherwise become waste during sheepskin processing. These fibres are cleaned, processed, and woven into textile form suitable for footwear linings. The resulting material retains wool’s natural temperature-regulating and moisture-wicking properties while maximising resource efficiency from existing production.

Can You Tell the Difference from Traditional Sheepskin?

UGGpure is a woven textile rather than natural sheepskin, so the texture is slightly different — but it delivers the same warmth and softness UGG is known for. The repurposed wool integrates with recycled polyester backings, and forms the foundation of UGGplush — UGG’s further innovation combining UGGpure with TENCEL™ Lyocell.

British Millerain

British Millerain is the original manufacturer of paraffin-based waxed cotton, established in 1880 in Halifax, Yorkshire. The company pioneered the transition from linseed oil treatments — which cracked in cold temperatures — to stable paraffin wax finishes. The first patented Millerain® rainproof finish launched in 1894.

Why Does British Millerain Matter?

British Millerain supplies the waxed cotton to Barbour, Belstaff, Filson, and other heritage brands. When you buy a Barbour waxed jacket, the fabric that keeps you dry in a downpour has been finished by Millerain using techniques refined over 140 years. Modern innovations include plant-based wax alternatives using olive, sunflower, and castor oil waste — maintaining waterproofing while reducing petroleum dependency.

Garments made with Millerain fabric can be re-waxed indefinitely, extending product lifespan well beyond synthetic alternatives.

DryVent™

DryVent™ is The North Face’s proprietary waterproof-breathable membrane technology using polyurethane (PU) coating construction. The multi-layered fabric blocks liquid water penetration while allowing water vapour to escape, reducing interior moisture buildup during activity.

What Are the Different Types of DryVent™?

DWR Coating

Durable Water Repellent (DWR) is a polymer coating applied to fabric surfaces to create water resistance. The treatment lowers surface energy, causing water to bead into dome-shaped droplets that roll off rather than saturating the textile. DWR does not make fabric waterproof — that requires a membrane — but it prevents the outer face fabric from “wetting out,” which would compromise breathability and create a clammy sensation.

Why Does DWR Matter if the Jacket Has a Membrane?

When DWR wears down, the outer fabric absorbs water instead of repelling it. The membrane underneath is still waterproof, but a saturated outer layer blocks vapour transfer — breathability plummets and the jacket feels clammy inside. Maintaining DWR keeps the outer fabric light and permeable, allowing the membrane to do its job properly.

How Do You Restore DWR?

First try heat — tumble dry on low for 20 minutes or use a warm iron through a towel. Heat reactivates the existing DWR molecules. If water still does not bead after heat treatment, apply a reproofing product like Nikwax TX.Direct (spray-on for targeted application, wash-in for overall treatment). Reproofing is needed every 3–6 months depending on wear frequency.

eVent® Membrane

eVent® is a waterproof-breathable membrane using Direct Venting™ technology to allow moisture vapour to escape without requiring humidity buildup inside the garment. Unlike membranes that rely on a polyurethane layer over ePTFE, eVent’s microporous membrane remains air-permeable, enabling instant vapour transmission regardless of external conditions.

How Does eVent® Differ from Gore-Tex®?

Gore-Tex uses a PU layer over its membrane, which means breathability improves as internal humidity rises — you need to start sweating before it vents efficiently. eVent’s Direct Venting works immediately, making it feel less clammy from the start of activity. The trade-off is maintenance: because eVent lacks that protective PU layer, the membrane needs more frequent washing and DWR care to keep the open pore structure performing.

eVent suits high-output activities — ski touring, climbing, cycling — where preventing internal moisture buildup is critical. Brands we stock that offer comparable membrane technologies include Berghaus (Hydroshell) and The North Face (FUTURELIGHT).

FUTURELIGHT™

FUTURELIGHT™ is The North Face’s proprietary waterproof-breathable membrane manufactured using a nanospinning process. Over 200,000 nozzles deposit polyurethane solution onto a surface, creating a randomised matrix of nano-sized fibres with microscopic pores that allow air to pass through while blocking liquid water.

What Makes FUTURELIGHT™ Different from Other Membranes?

Most waterproof membranes rely solely on moisture vapour transmission — sweat escapes as vapour through microscopic pores. FUTURELIGHT adds air permeability to the waterproof barrier, enabling direct airflow through the membrane. This means temperature regulation during high-output activities is noticeably better — air moves through, not just vapour.

Is FUTURELIGHT™ Better Than Gore-Tex®?

Different rather than better. FUTURELIGHT’s air permeability makes it feel less clammy during hard effort, particularly in Summit Series jackets designed for alpine climbing and ski mountaineering. Gore-Tex offers a wider product range and longer track record. For most users, both provide excellent waterproof-breathable protection. The choice matters most for sustained high-output activities in the mountains.

Gore-Tex®

Gore-Tex® is a waterproof-breathable membrane developed by W. L. Gore & Associates. It sits between the outer fabric and the lining of a jacket or shoe, blocking rain while letting your sweat escape as vapour. The membrane contains over 9 billion pores per square inch — each one 20,000 times smaller than a water droplet but 700 times larger than a water vapour molecule. That ratio is the entire technology in one sentence: water cannot get in, but moisture can get out.

How Does Gore-Tex® Actually Work?

The Gore-Tex membrane is a thin film laminated between layers of fabric. In a 3-layer jacket, it sits between the outer face fabric and an inner backer — creating a sandwich that is fully waterproof but still breathes. Every seam is sealed with proprietary Gore-Seam® tape using heat and adhesive, because a single untaped seam would let water through.

The outer fabric also receives a DWR (Durable Water Repellent) coating that makes water bead and roll off rather than soaking into the face fabric. When DWR wears down, the jacket looks “wet out” — water spreads across the surface instead of beading. The membrane underneath is still waterproof, but breathability drops because the saturated outer fabric blocks vapour transfer. This is why DWR maintenance matters.

What Are the Different Types of Gore-Tex®?

Is Gore-Tex® Worth the Extra Money?

Yes — if you need genuine waterproof performance that lasts. Lower-cost “waterproof” jackets typically use PU or silicone coatings that lose effectiveness over time as the coating breaks down. Gore-Tex is a permanent membrane that outlasts the garment itself. The membrane does not degrade — only the DWR coating on the outer fabric needs occasional refreshing.

Where it is not worth it: if you only need light shower protection for a 10-minute walk. A £40 DWR-coated softshell will handle that. Gore-Tex earns its premium when you are out for hours in sustained rain, high winds, or technical terrain where failure means misery.

How Do You Wash and Care for Gore-Tex®?

Gore-Tex® Paclite

Gore-Tex® Paclite is a lightweight membrane technology engineered for maximum packability without sacrificing waterproof-breathable protection. The construction eliminates the traditional inner lining by applying a protective oleophobic (oil-repellent) coating with carbon directly to the membrane interior.

When Should You Choose Paclite Over Standard Gore-Tex®?

Choose Paclite when weight and packability are priorities. Emergency shells that live in your bag, travel jackets, and lightweight hiking — situations where you want full Gore-Tex protection available but do not want to carry a heavy jacket all day. The trade-off is durability: standard 3-layer Gore-Tex handles daily hard wear better, while Paclite prioritises being light enough that you actually carry it.

Gore-Tex® Pro

Gore-Tex® Pro is the most rugged membrane in the Gore-Tex product family, engineered for extreme mountain environments and professional use. The technology uses a three-layer laminate: tough outer face fabric with PFAS-free DWR, the ePE membrane, and a robust interior backer.

Who Needs Gore-Tex® Pro?

If you are ice climbing, ski mountaineering, or spending extended time in severe mountain conditions, Gore-Tex Pro is the technology designed for you. The additional ruggedness testing exceeds standard Gore-Tex requirements — thousands of hours of combined lab and field testing before a product earns the Pro designation. For most hikers and casual outdoor users, standard Gore-Tex provides more than enough protection at lower cost.

Hydroshell™

Hydroshell™ is Berghaus’s proprietary waterproof-breathable membrane technology using polyurethane (PU) construction. Launched in 2015, the technology bridges the gap between budget and premium waterproofing, delivering reliable weather protection at accessible price points compared to Gore-Tex.

How Does Hydroshell™ Compare to Gore-Tex®?

Hydroshell uses hydrophilic PU membrane (molecular diffusion) rather than Gore-Tex’s microporous structure. In practical terms: Hydroshell provides reliable waterproofing for British hillwalking, hiking, and everyday outdoor use at a lower price point than Gore-Tex. The top-tier Elite Pro competes directly with mid-range Gore-Tex on specifications. For most UK walking conditions, Hydroshell delivers everything you need.

What Makes Hydroshell™ Comfortable?

According to Berghaus, the raised dot pattern on the interior reduces skin contact area, which eliminates the clammy sensation common in non-three-layer constructions. Reinforced fabric panels at shoulders, hips, and sleeve exteriors provide abrasion resistance where backpack straps create friction — a detail that matters during long days on the hill.

Pertex®

Pertex® is a technical fabric platform developed in Lancashire in 1979, now manufactured from Japan. The technology encompasses multiple fabric families optimised for specific performance requirements: ultralight insulation shells, waterproof-breathable protection, and lightweight downproof applications.

How Does Pertex® Achieve Downproofness Without Weight?

Pertex Quantum achieves downproofness through heat calendering — a process transferring parachute canopy manufacturing expertise to technical apparel fabrics. The calendering compresses and smooths the weave surface, closing gaps that would allow down migration while maintaining air permeability for breathability. The result: ultra-fine fabrics that keep down inside the garment without adding bulk or weight.

Pertex fabrics appear in premium down jackets from brands across the outdoor industry. When you see an ultralight down jacket that feels impossibly thin yet holds its insulation in place, the shell fabric is likely Pertex Quantum.

PFAS-Free Technology

PFAS-free technology eliminates per- and polyfluoroalkyl substances — “forever chemicals” — from DWR coatings and waterproof membranes. Traditional DWR used C8 fluorocarbons (PFOA/PFOS, now banned) then C6 alternatives; both persist in the environment and human bodies for thousands of years with documented health concerns.

Should You Care About PFAS-Free?

Yes. PFAS chemicals accumulate in the body and the environment indefinitely — they do not break down naturally. The outdoor industry is transitioning because legislation mandates it and because the environmental evidence is now overwhelming. The good news: PFAS-free alternatives now deliver comparable water repellency for normal outdoor use. You may need to reproof slightly more often, but the performance gap has narrowed dramatically.

PU Membrane

Polyurethane (PU) membrane is a waterproof-breathable barrier laminated to fabric for weather protection. Unlike microporous membranes (Gore-Tex), hydrophilic PU operates through molecular diffusion: water vapour molecules bond to the membrane and transfer through via concentration gradient. PU is the most common waterproofing technology in mid-range outdoor jackets.

How Does PU Membrane Compare to Gore-Tex®?

According to The North Face, PU membrane performance improves with body heat and humidity differential — meaning it breathes better during activity than at rest. Gore-Tex’s microporous structure offers more consistent breathability across conditions. For most hiking and everyday outdoor use in Britain, a well-made PU membrane jacket (like DryVent or Hydroshell) provides reliable protection. Gore-Tex earns its premium in sustained extreme conditions.

Regulator Membrane Technology

Regulator membrane technology describes adaptive breathable barriers that modulate vapour transmission based on activity level and environmental conditions. Unlike static membranes with fixed breathability, regulator systems increase breathability during high exertion when body heat and humidity rise, then reduce permeability at rest to retain warmth.

Who Benefits from Regulator Technology?

Anyone doing variable-intensity outdoor activities. Ski touring (climbing uphill = high output, skiing down = rest), winter hiking with steep ascents and exposed ridge walks, or any situation where you alternate between hard effort and standing still in the cold. Traditional static membranes leave you sweating during exertion and chilling during breaks.

Softshell vs Hardshell

Hardshell and softshell describe two categories of technical outerwear differentiated by construction, weatherproofing, and intended use. Understanding the difference helps you choose the right layer for the conditions.

How Do You Choose Between Softshell and Hardshell?

Sylkoil Wax

Sylkoil is Barbour’s proprietary wax finish applied to their signature waxed cotton jackets. A traditional paraffin-based formulation that creates the characteristic tacky feel and distinctive appearance Barbour is known for. The finish provides robust weather protection while developing a natural patina through wear.

How Do You Maintain a Sylkoil Jacket?

Sponge clean with cold water only — never machine wash or dry clean, as these will strip the wax finish permanently. Re-wax annually (or when the jacket starts looking dry and pale at creases) using Barbour Wax Thornproof Dressing. Apply with a cloth, work into seams and creases, then hang in a warm room to let the wax absorb. The re-waxing process restores water resistance and the rich, dark appearance.

Thornproof Wax

Thornproof wax is a heavy-duty wax finish designed for extreme field use where jackets encounter thorns, brambles, and abrasive vegetation. The treatment creates a thicker, more resilient wax layer than standard finishes, originally developed for gamekeepers and agricultural workers.

What Is the Difference Between Sylkoil and Thornproof?

Sylkoil is the standard Barbour wax finish — the one most people associate with Barbour jackets. Thornproof is the heavier, tougher version designed for hard field use. Thornproof provides superior abrasion resistance and enhanced water repellency for prolonged outdoor exposure, but with a stiffer feel. Sylkoil is the better choice for lifestyle and everyday wear; Thornproof is built for the field.

Water Column Rating

Water column rating — also called hydrostatic head (HH) — measures fabric waterproofness by quantifying the water pressure a material can withstand before leakage occurs. Testing follows ISO 811 or AATCC 127 standards: fabric is placed over a sealed chamber while water pressure increases gradually. The rating (in millimetres) indicates the height of water column the fabric resists before three drops penetrate.

Does a Higher Number Always Mean Better?

Not necessarily. Water column is one factor among several. DWR treatment, seam sealing quality, and membrane breathability equally affect practical waterproof performance. A jacket rated at 10,000mm with excellent seam sealing and fresh DWR can outperform a 20,000mm jacket with poor seams and worn DWR in real-world conditions.

Waxed Cotton

Waxed cotton is 100% cotton fabric impregnated with paraffin, beeswax, or plant-based wax compounds to create water-resistant properties. The treatment fills the hollow cotton fibres, making them watertight while a tight weave blocks rain penetration. Microscopic gaps between fibres allow vapour escape, providing breathability unavailable in fully waterproof membranes.

How Does Waxed Cotton Compare to Synthetic Waterproofs?

Waxed cotton is heavier, stiffer, and less waterproof than modern membrane jackets. What it offers instead is durability, repairability, breathability, and a character that improves with age. A well-maintained waxed jacket can last 20+ years, developing a unique patina that no synthetic can replicate. Synthetics are lighter, more waterproof, and require less maintenance — but they degrade and cannot be meaningfully repaired.

How Do You Care for Waxed Cotton?

Sponge clean with cold water only. Never machine wash, tumble dry, or dry clean. Re-wax annually using the brand’s recommended dressing (Barbour Thornproof Dressing for Barbour; Belstaff Wax Bar for Belstaff). Apply in a warm environment and allow the wax to absorb fully before wearing. Modern innovations include plant-based wax alternatives using olive, sunflower, and castor oil waste.

Wind Resistance

Wind resistance measures a fabric’s ability to block air movement through its structure, reducing convective heat loss. Air permeability testing (ASTM D737) measures cubic feet of air passing through one square foot of fabric per minute (CFM). Lower CFM values indicate greater wind resistance.

When Do You Need Wind Protection?

Even light breeze significantly increases perceived cold. Wind-resistant layers preserve the still air trapped in insulating mid-layers. Complete windproofing suits static activities in exposed conditions (summit stops, chairlifts), while partial wind resistance with maintained breathability suits high-output activities where vapour transmission prevents overheating (running, cycling, ski touring).

WINDSTOPPER®

WINDSTOPPER® by GORE-TEX LABS (formerly GORE-TEX INFINIUM™) is a windproof-breathable membrane technology. Unlike waterproof GORE-TEX products, WINDSTOPPER prioritises total wind protection and superior breathability over waterproofing, making it ideal for high-output activities in dry or mixed conditions.

What Is the Difference Between WINDSTOPPER® and Gore-Tex®?

Gore-Tex is fully waterproof. WINDSTOPPER is fully windproof and highly breathable but handles only light rain via DWR treatment. The larger pore structure delivers enhanced breathability compared to standard Gore-Tex membranes — body heat and moisture escape rapidly during intense activity. Choose WINDSTOPPER for aerobic activities where wind chill is the main threat; choose Gore-Tex when rain is expected.

WindWall™

WindWall™ is The North Face’s wind-resistant fabric technology using a unique bonding process to block wind penetration while maintaining breathability. The construction protects the body’s microclimate from convective heat loss caused by wind chill, with DWR treatment for water resistance against light precipitation.

When Should You Choose WindWall™ Over a Waterproof Jacket?

WindWall suits high-output activities in exposed but dry conditions. Running on a windy hillside, cycling on an exposed road, or hiking in cold wind without rain. If rain is expected, layer a lightweight waterproof shell over your WindWall layer. The combination gives you wind protection, breathability during exertion, and waterproofing when needed.

Aramid Fibre

Aramid fibres are a class of heat-resistant, high-strength synthetic fibres derived from aromatic polyamide polymers. The two primary commercial variants are para-aramid (Kevlar®, Twaron®) offering extreme tensile strength, and meta-aramid (Nomex®) providing flame and heat resistance. DuPont developed Kevlar in 1965.

Where Will You Find Aramid in Clothing?

Kevlar appears in motorcycle protective apparel, cut-resistant gloves, and reinforcement panels. Motorcycle jeans increasingly incorporate aramid lining for abrasion protection — CE-rated garments specify aramid content and coverage area. In premium outerwear, aramid fibres reinforce high-stress areas. Salomon’s Matryx upper fabric weaves Kevlar into trail shoe uppers for exceptional abrasion resistance.

Ballistic Nylon

Ballistic nylon is a thick, tough synthetic fabric originally developed by DuPont during World War II for flak jackets protecting aircrews from shrapnel. The material uses a 2×2 or 2×3 basket weave construction with high-denier nylon yarns (typically 840D–1680D) creating an exceptionally abrasion-resistant, tear-resistant textile.

How Does Ballistic Nylon Compare to Cordura®?

Both are premium durability fabrics. Ballistic nylon is heavier at equivalent durability but provides a different, more refined aesthetic — the basket weave creates a distinctive textured surface. Cordura uses air-textured yarns for strength without proportional weight increase. For luggage and bags, both deliver exceptional longevity. For clothing, Cordura’s lighter weight makes it more practical.

Biogreen Vegan Leather

Biogreen is a partially bio-based polyurethane (PU) leather alternative used in Vivienne Westwood’s vegan accessories collection. The material combines plant-derived content with synthetic polymers to create a leather-like surface that can be embossed with textures including Saffiano patterns.

Is Biogreen as Durable as Real Leather?

The embossed surface treatment provides scratch and water resistance comparable to coated genuine leather, delivering practical durability alongside ethical positioning. Bio-based PU leathers offer reduced petroleum dependency compared to fully synthetic alternatives while eliminating animal-derived materials entirely. For everyday use — handbags, purses, wallets — Biogreen performs well.

Calfskin Leather

Calfskin leather is hide from young cattle, typically under one year old. Prized for its fine grain, smooth texture, and excellent strength-to-weight ratio, calfskin is more flexible and lightweight than adult cowhide while maintaining durability. Italian calfskin from specialist tanneries is considered among the most luxurious leather types.

How Do You Care for Calfskin?

Use a quality leather conditioner every 3–4 months to maintain suppleness and prevent drying. Avoid prolonged exposure to direct sunlight, which can fade the leather. Clean surface marks with a soft, damp cloth. Store in a breathable dust bag — never plastic, which traps moisture. Full-grain calfskin develops a beautiful patina over time that adds character to the piece.

Cashmere Grading

Cashmere grading classifies fibre quality based on diameter (measured in microns) and length. The finer and longer the fibre, the softer, stronger, and more durable the resulting yarn. For reference, human hair measures 50–100 microns in diameter.

Why Does Cashmere Grade Matter?

Finer fibres bend when contacting skin rather than causing irritation, eliminating the itching associated with coarse wool. Longer fibres produce stronger yarns that resist pilling and maintain shape. Grade verification protects against adulteration — studies indicate widespread substitution in unverified supply chains. When you pay for cashmere, knowing the grade ensures you receive the quality you expect.

Corduroy

Corduroy is a durable textile featuring raised vertical ridges called wales, constructed by weaving extra filling yarns into a base fabric and cutting the floats to form soft pile ridges. The name combines “cord” (rope) and “duroy” (coarse English wool cloth).

How Do You Choose Corduroy Weight?

Lower wale number equals thicker ridges. Pinwale (16–23 wales) works for shirts and lighter garments; standard (10–14) is the classic trouser and jacket weight; wide-wale (3–8) creates a bold texture for outerwear. Traditional British country clothing predominantly uses standard-wale corduroy. For premium trousers, look for Italian-woven corduroy with slight elastane content for comfort stretch.

ECONYL®

ECONYL® is a regenerated nylon 6 fibre produced by Italian company Aquafil, manufactured entirely from pre- and post-consumer nylon waste including abandoned fishing nets, carpet flooring, and fabric scraps. Through chemical depolymerisation, waste nylon is broken down to its original caprolactam monomer and reconstructed into virgin-quality nylon without performance degradation.

Is ECONYL® as Good as Virgin Nylon?

Yes. Unlike mechanical recycling that degrades fibre quality, ECONYL’s chemical regeneration restores nylon to original purity. Properties are identical to virgin nylon: durable, moisture-resistant, quick-drying, and UV-resistant. The continuous filament construction also limits microplastic emissions compared to staple fibre alternatives.

Egyptian Cotton

Egyptian cotton refers to extra-long staple cotton grown in the Nile River Valley, derived from the Gossypium barbadense plant. Fibre length measures 32–50mm, compared to 26–32mm for Pima and 19–25mm for standard Upland cotton. The hot, dry climate and mineral-rich Nile soil produce exceptionally fine fibres.

How Do You Know If Egyptian Cotton Is Genuine?

The Egyptian Cotton Association provides authentication for genuine products, addressing widespread mislabelling. Extra-long staple fibres create smoother, stronger yarns with superior lustre and colour retention. The hand-harvesting tradition preserves fibre integrity, producing fabric with minimal pilling. If a product carries the Egyptian Cotton logo, it has been verified as genuine.

Elastane / Spandex

Elastane is a synthetic fibre containing at least 85% segmented polyurethane, invented by DuPont chemist Joseph Shivers in 1958. The terms elastane (Europe), spandex (North America), and Lycra (brand name) describe chemically identical materials.

Why Is Elastane in Almost Everything?

Even small percentages (2–5%) add meaningful comfort stretch to cotton chinos, denim, and dress shirts. Higher percentages (15–25%) feature in activewear, compression garments, and swimwear. The fibre returns to shape after stretching, maintaining garment fit through extended wear. Most of the premium casualwear and activewear in our collections includes elastane for comfort and fit.

Full Grain Leather

Full grain leather is the highest-quality leather grade, retaining the complete natural grain surface — the outermost layer of the animal hide. Unlike corrected or sanded leathers, full grain preserves the original texture including natural markings, scars, and pore patterns. The intact grain provides superior strength because the tightest, densest fibres remain undisturbed.

Why Does Full Grain Cost More?

Because most raw hides have surface imperfections that disqualify them from full grain use. The remaining 15–20% that qualify command a premium. In return, you get leather that develops character over time rather than degrading, with natural water resistance and breathability that corrected leathers cannot match. Full grain leather goods are investment pieces designed for long-term ownership.

Geelong Wool

Geelong wool — often marketed as Super Geelong lambswool — is ultra-fine Merino wool measuring 15–19.5 microns in diameter, comparable to cashmere’s 15–18.5 micron range. Named after the Geelong region of southern Australia, the fibre comes exclusively from the first shearing of large-frame Merino lambs at approximately seven months of age.

Is Geelong Wool as Good as Cashmere?

According to specialist wool merchants, Geelong offers cashmere-level luxury with greater durability. The stronger crimp compared to standard Merino traps more insulating air, delivering warmth without bulk. Natural lanolin content provides softness and water resistance. The fibre resists pilling better than cashmere while maintaining hypoallergenic properties suitable for sensitive skin. If cashmere is the silky luxury choice, Geelong is the practical luxury choice.

Goatskin Leather

Goatskin leather is characterised by a distinctive pebbled grain texture, high natural lanolin content, and tight fibre structure. Also known as Moroccan leather, it offers an exceptional balance between softness and durability — lighter than cowhide but tougher than lambskin.

Why Is Goatskin Preferred for Leather Jackets?

The balance of properties makes goatskin ideal for outerwear. Natural water resistance from lanolin provides inherent weather protection without treatment. The soft-from-new feel means no break-in period. Dense fibres resist abrasion without the weight of cowhide. And it ages beautifully. Combination tanning using both vegetable and chrome methods produces the best results.

HeiQ AeoniQ™

HeiQ AeoniQ™ is a climate-positive continuous cellulose filament yarn developed by Swiss materials innovation company HeiQ. The technology converts wood pulp, textile waste, and agricultural byproducts into high-performance yarn that matches polyester in quick-dry properties and nylon in stretch characteristics while remaining fully biodegradable and endlessly recyclable.

Why Is HeiQ AeoniQ™ Significant?

HUGO BOSS was an early investor in HeiQ AeoniQ and launched first-to-market wool-blend suits using the technology. The yarn addresses the 111 million metric tonne synthetic fibre market currently dominated by non-biodegradable polyester and nylon. Unlike conventional viscose which produces short staple fibres, AeoniQ creates continuous filament yarn suitable for performance textiles — a genuine step forward for sustainable materials in fashion.

Hemp Fibre

Hemp is a natural bast fibre obtained from the stem of Cannabis sativa L. plants, cultivated specifically for industrial use with THC content below 0.3%. Like linen, hemp fibres are released through retting and mechanical processing. The crop requires minimal pesticides, grows densely (suppressing weeds), and produces more fibre per acre than cotton or flax.

Is Hemp Comfortable Enough for Everyday Clothing?

Modern hemp-cotton blends combine hemp’s exceptional durability with cotton’s softness, reducing the coarse hand feel associated with 100% hemp. The fibre becomes softer with each wash without losing strength — the opposite of most synthetics. For everyday apparel, hemp blends offer a sustainable alternative to pure cotton with significantly lower environmental impact.

Italian Jacquard Wool

Italian jacquard wool is a woven wool textile featuring patterns created directly in the weave structure rather than printed onto the surface. The jacquard loom, invented in 1804, uses programmable control of individual warp threads, enabling complex motifs including the tonal Orb designs characteristic of Vivienne Westwood scarves.

Why Is Jacquard Better Than Printed Patterns?

Jacquard-woven patterns are integral to the fabric structure — they are part of the textile itself rather than sitting on the surface. This means the pattern maintains its clarity through years of wear, washing, and use. Surface prints, by contrast, can crack, fade, or peel over time. For premium scarves and accessories, jacquard construction delivers lasting quality.

Jersey Knit

Jersey is a single-knit fabric characterised by a smooth face (V-shaped stitches) and textured reverse (horizontal loops). Named after Jersey in the Channel Islands, jersey knitting creates inherent stretch across the width without requiring elastane.

What Is the Difference Between Single and Double Jersey?

Single jersey is lighter, stretchier, and curls at cut edges. Double jersey uses two needle beds for increased stability, weight, and a smooth finish on both sides. For T-shirts and base layers, single jersey delivers comfortable drape. For structured garments like polo shirts, double jersey provides better body and shape retention.

Lambswool

Lambswool is wool obtained from the first shearing of a sheep, typically at six to seven months old. Also called virgin wool, this initial clip produces the finest, softest fleece the sheep will ever yield. Fibre diameter typically measures under 25 microns, with staple lengths up to 50mm. Each sheep provides lambswool only once in its lifetime.

Why Is Lambswool Softer Than Regular Wool?

First-shearing wool lacks the coarseness that develops as sheep age, making it suitable for sensitive skin. The fibre tips from a first shearing are naturally tapered and smooth, unlike subsequent shearings where the cut ends create a blunter, pricklier fibre. Combined with natural crimp that creates insulating air pockets and moisture-wicking properties, lambswool delivers comfort that adult wool cannot match.

Linen

Linen is a natural bast fibre extracted from the stem of the flax plant (Linum usitatissimum), dating to approximately 8,000 BCE. Belgium, France, and the Netherlands produce the highest-quality flax, with Belgium’s climate considered optimal.

Is Linen Worth the Wrinkles?

Linen wrinkles are part of the fabric’s character — premium linen develops a relaxed, lived-in drape that many consider an asset rather than a flaw. For summer wear, nothing matches linen’s cooling properties. Linen-cotton blends combine breathability with reduced creasing for those who prefer a neater look. The fabric softens beautifully with each wash.

Lisle Yarn

Lisle yarn — also called cotton lisle or fil d’Écosse (Scottish thread) — is a finely-spun, tightly-twisted mercerised cotton producing exceptional lustre and durability. Named after Lille, France, the material uses long-staple Egyptian Makò cotton measuring 30–38mm staple length with 12–14 micron fineness.

Why Does Lisle Feel Like Silk?

Double mercerisation permanently alters the cotton fibre’s cross-section from collapsed to nearly circular, reflecting light evenly and creating silk-like lustre. The tight twist construction eliminates surface fuzz. The result is a yarn that looks and feels luxurious while breathing better than synthetic alternatives — ideal for summer knitwear and premium polo shirts.

LWG Certified Leather

LWG (Leather Working Group) certification is an environmental auditing standard that assesses the compliance and performance capabilities of leather manufacturers across environmental management, waste management, water usage, energy consumption, chemical management, and traceability.

Why Does LWG Certification Matter?

LWG provides independent verification that leather production meets established environmental benchmarks — addressing consumer concerns about chemical usage, water consumption, and waste in leather processing. According to Vivienne Westwood, the brand requires all leather products to meet LWG Environmental Auditing standards, ensuring accountability from tannery to finished product.

Mercerised Cotton

Mercerised cotton is cotton yarn or fabric treated with sodium hydroxide under tension. The process, developed by John Mercer in 1844 and refined by Horace Lowe in 1890, permanently alters the fibre’s molecular structure, converting the cross-section from collapsed to nearly circular.

How Can You Tell Cotton Is Mercerised?

Mercerised cotton has a visible sheen that standard cotton lacks — it catches light and looks polished rather than matte. Colours appear deeper and more saturated. The fabric resists pilling and lint, feels smoother against the skin, and maintains its appearance through repeated washing. When you see a cotton polo shirt with an almost silky lustre, it is likely mercerised.

Nappa Leather

Nappa leather is full-grain leather that has undergone chrome tanning to produce an exceptionally soft, supple finish. Named after Napa, California, where Emanuel Manasse developed the tanning process in 1875. Nappa describes the treatment method rather than a specific animal source.

What Makes Nappa Leather So Soft?

Chrome tanning and extended fat-liquoring processes lubricate the leather fibres, producing the butter-soft hand feel. The supple character enables form-fitting jackets without stiffness. Nappa ages gracefully but requires periodic conditioning to prevent drying and maintain its characteristic softness.

Nubuck

Nubuck is top-grain leather sanded on the outer grain side to create a soft, velvety nap. Unlike suede — which is buffed on the flesh side — nubuck uses the stronger outer surface, producing a finer, shorter nap with greater durability.

How Do You Protect Nubuck?

Apply a nubuck-specific protective spray before first wear. Clean with a nubuck brush (brass or nylon bristles) to restore nap direction. Never use standard leather conditioners — they flatten the nap permanently. For stain removal, use a nubuck eraser. Store away from direct sunlight to prevent fading.

Nylon (PA6 vs PA6.6)

Nylon is a synthetic polyamide fibre produced through polymerisation. The two primary variants — PA6 and PA6.6 — share the same molecular formula but differ in structural arrangement, affecting performance characteristics.

Does the Nylon Type Matter When Buying?

For most consumers, no — both PA6 and PA6.6 deliver excellent performance. PA6 appears more in hosiery, swimwear, and stretch fabrics. PA6.6 features in technical outerwear and applications demanding heat resistance. The important thing is the overall fabric quality and construction, not the polymer specification.

Organic Cotton

Organic cotton is cotton cultivated without synthetic pesticides, chemical fertilisers, or GMOs, following certified organic farming standards. It represents approximately 1% of global cotton production.

Is Organic Cotton Better Quality?

Organic refers to how the cotton is grown, not the fibre quality itself. Organic cotton can be any grade from standard to premium. The benefits are environmental (no toxic pesticide exposure for farmers, no chemical runoff) rather than inherent quality improvements. Premium organic cotton from quality sources delivers the same softness and durability as conventional premium cotton.

Oxford Weave

Oxford cloth is a basket-weave fabric where two weft threads pass over and under two warp threads simultaneously, creating a distinctive checkerboard texture. The weave originated in 19th-century Scotland.

Where Does Oxford Sit in Shirt Formality?

Oxford cloth button-down (OCBD) shirts sit between casual and smart-casual. The textured weave reads as relaxed compared to smooth poplin or twill dress shirts. For versatility, Oxford is hard to beat — equally at home under a blazer or worn open-collar at the weekend. Pinpoint Oxford offers a dressier version for those wanting Oxford’s comfort with a more refined surface.

Pebbled Leather

Pebbled leather features a textured surface created by mechanically tumbling hides in rotating drums or embossing with patterned plates. The irregular, rounded grain creates a distinctive tactile surface that masks minor scratches and wear marks.

Why Choose Pebbled Over Smooth Leather?

Pebbled leather maintains a fresh appearance over extended use. If you are buying a bag for daily use — work commutes, school runs, weekends — pebbled texture hides the inevitable knocks and scuffs far better than smooth finishes. It is the practical choice for high-frequency accessories.

Polyamide

Polyamide (PA) is a synthetic fibre family commonly known as nylon. Wallace Carothers at DuPont synthesised the first polyamide (PA6.6) in 1935. See our Nylon (PA6 vs PA6.6) entry for detailed comparison of the two primary variants.

PU Leather

Polyurethane leather (PU leather or faux leather) is a synthetic material constructed by coating a fabric backing with a flexible polyurethane layer. The surface can be embossed with textures including smooth, pebbled, or Saffiano patterns.

How Long Does PU Leather Last?

Quality varies enormously. Premium PU from brands like Valentino Bags can approach genuine leather appearance and provide several years of daily use. Budget PU can crack and peel quickly. For accessories, the key is buying from brands that invest in quality PU formulations and construction.

Ponte Roma

Ponte Roma (Ponte di Roma) is a double-knit fabric with identical smooth surfaces on both sides. The name translates to “Roman bridge,” referencing the interlocking stitch structure. Typical composition: 65/30/5 or 60/35/5 polyester/viscose/elastane.

Recycled Polyester

Recycled polyester (rPET) is polyethylene terephthalate fibre manufactured from post-consumer plastic bottles and textile waste rather than virgin petroleum. Approximately 5 plastic bottles yield enough fibre for one T-shirt.

Saffiano Leather

Saffiano leather is textured leather distinguished by a diagonal crosshatch pattern embossed into the surface. Invented by Mario Prada in 1913 — heating calfskin to ~70°C, pressing a crosshatch pattern, then applying synthetic wax coating.

Santa Croce Italian Leather

Santa Croce leather originates from the historic tanning district of Santa Croce sull’Arno in Tuscany — a region producing leather since medieval times. Over 250 tanneries operate within a concentrated zone, benefiting from generations of accumulated expertise.

Sateen

Sateen is a weave construction where weft threads float over multiple warp threads, creating a smooth, lustrous surface. Cotton sateen mimics the appearance of silk satin using cotton fibres.

Suede

Suede is leather with a napped finish created by buffing the inner flesh side of the hide. The name derives from “gants de Suède” — Swedish gloves. Common sources include lamb, goat, calf, and pig hides.

How Do You Protect Suede from Water?

Apply a suede-specific waterproof spray before first wear. Reapply periodically, especially before wet seasons. If suede does get wet, allow it to dry naturally (never use heat), then brush gently to restore the nap. Prevention is always easier than cure with suede — the protective spray makes all the difference.

TENCEL™ Lyocell

TENCEL™ is a branded regenerated cellulose fibre manufactured by Lenzing AG from sustainably-sourced wood pulp — primarily eucalyptus, beech, and pine from FSC/PEFC certified forests. Production uses a closed-loop system recovering 99.8% of the solvent.

Top Grain Leather

Top grain leather is the second-highest quality grade, created by splitting the top layer from the hide and sanding the surface to remove imperfections. An artificial grain pattern is then embossed and finished with pigmented coating.

Twill Weave

Twill is a fundamental weave structure with diagonal parallel ribs, created by passing weft threads over one or more warp threads then under two or more, with each row offset. The diagonal typically ranges from 45 to 75 degrees.

Vegan Leather

Vegan leather refers to any leather-like material produced without animal products. Primary types include PU leather, PVC leather, and plant-based alternatives using apple waste, pineapple leaf fibre (Piñatex), cactus (Desserto), or mushroom mycelium (Mylo).

Viscose

Viscose (rayon) is a semi-synthetic regenerated cellulose fibre manufactured from wood pulp. Invented in 1894, viscose remains the most common rayon variant, accounting for approximately 6% of global fibre production.

bluesign® Certification

bluesign® is an independent certification system for the textile industry, ensuring materials and manufacturing processes meet strict environmental, health, and safety standards. Founded in Switzerland in 2000, bluesign manages sustainability from production input through finished product — not just testing end products.

Why Should You Look for bluesign®?

bluesign certification means the fabric was manufactured responsibly from the start — hazardous substances eliminated before production begins, not just tested at the end. On-site assessments evaluate air emissions, water discharge, occupational safety, and resource efficiency. For outdoor gear using synthetic materials and waterproof coatings, bluesign provides assurance that responsible chemical management was applied throughout manufacturing.

Denier

Denier (D) is a unit measuring linear mass density of fibres — specifically, the mass in grams of 9,000 metres of fibre. Lower denier indicates finer fibres; higher denier indicates thicker, typically stronger fibres. The measurement system originated from silk grading in France.

Does Higher Denier Always Mean Better?

Higher denier generally indicates greater tear and abrasion resistance, but also more weight. A 20D shell packs light and saves weight; a 210D shell handles rough terrain. The right denier depends on intended use — ultralight for backpacking, heavy-duty for field work, mid-range for everyday outdoor use.

GRS Certification

The Global Recycled Standard (GRS) is an international certification verifying recycled content in textiles and tracking raw materials through the supply chain. Administered by Textile Exchange, GRS certifies products containing minimum 20% recycled material with full chain-of-custody documentation.

Why Does GRS Matter?

GRS provides the traceability brands require to substantiate recycled content claims against greenwashing accusations. When a product carries GRS certification, the recycled content has been independently verified from recycling facility through to finished product. Without GRS or equivalent certification, recycled content claims are essentially unverified.

GSM (Fabric Weight)

GSM (grams per square metre) is the standard metric for measuring fabric weight, indicating how many grams one square metre of fabric weighs regardless of fibre type or construction. Testing follows ISO 3801 methodology.

Why Does GSM Matter When Buying Clothes?

GSM directly affects how a garment feels, drapes, and lasts. A 140 GSM T-shirt feels thin and may show through; a 200 GSM version has substance and structure. Higher GSM does not always mean better — lightweight fabrics suit summer; heavyweight suits winter. GSM enables objective comparison independent of fibre content.

Higg Index

The Higg Index is a suite of sustainability measurement tools developed by the Sustainable Apparel Coalition to assess environmental and social performance across the apparel and footwear supply chain. The Higg Materials Sustainability Index (MSI) scores materials based on global warming potential, water use, chemistry, and resource depletion.

Should You Pay Attention to Higg Scores?

Higg MSI enables standardised material comparison using lifecycle assessment methodology. Brands use Higg data for material selection and sustainability reporting. For consumers, Higg provides a way to evaluate sustainability claims against standardised benchmarks rather than relying on marketing language alone. Transparency requires verified data through Higg’s third-party assurance programme.

OEKO-TEX® Standard 100

OEKO-TEX® Standard 100 is the world’s most widely recognised textile certification for human-ecological safety, testing finished products for harmful substances. Established in 1992, the standard verifies that textiles contain no chemicals at levels harmful to human health — testing over 350 regulated substances.

Why Does OEKO-TEX® Matter?

OEKO-TEX certification tests the finished product — every component including threads, buttons, and trims must pass individually. This means the garment you buy has been verified free of harmful chemicals above established limits. For items worn next to skin (underwear, base layers, baby clothing), OEKO-TEX provides meaningful assurance about chemical safety.

RDS Certified Down

The Responsible Down Standard (RDS) is an independent certification ensuring ethical sourcing and humane treatment of ducks and geese in down production. Developed by The North Face in partnership with Textile Exchange in 2014, RDS prohibits live-plucking and force-feeding.

Should You Look for RDS on Down Products?

Yes, if ethical sourcing matters to you. RDS certification means independent third-party audits have verified that the down in your jacket was sourced without live-plucking or force-feeding. Without RDS or equivalent certification, the sourcing practices are essentially unverifiable. The North Face has used 100% RDS-certified down since 2016.

Woolmark Certification

The Woolmark logo is a quality certification owned by The Woolmark Company guaranteeing products contain 100% new wool meeting strict performance standards. Introduced in 1964, it is the world’s most recognised textile fibre brand, appearing on over 5 billion products globally.

What Does Woolmark Guarantee?

Woolmark verifies both fibre authenticity and garment durability. Products undergo independent laboratory testing that exceeds general industry requirements across 19 quality criteria. The certification protects consumers against inferior wool blends and synthetic substitutes. When you see Woolmark, the wool content and performance have been independently verified.

3D Advanced Chassis

3D Advanced Chassis is Salomon’s proprietary stability platform positioned between the midsole and outsole of trail and hiking footwear. The low-profile chassis optimises motion control and energy management while providing underfoot protection.

Active Chassis

Active Chassis is Salomon’s lightweight guidance system for agility-focused trail footwear. Unlike the rigid 3D Advanced Chassis, Active Chassis provides dynamic support that moves with the foot while maintaining directional control.

Carbon Plate

A carbon plate is a rigid carbon fibre insert embedded within running shoe midsoles to enhance propulsion and running efficiency. Introduced commercially with Nike’s Vaporfly 4% in 2017, research indicates the combination of carbon plate with high-energy-return foam reduces the energetic cost of running by 2.6–4%.

How Does a Carbon Plate Work?

The plate increases longitudinal bending stiffness, reducing ankle joint flexion and decreasing calf muscle workload. Curved geometry creates a lever effect accelerating heel lift during toe-off. Foam compression against the rigid plate produces rapid energy return. These factors combine to reduce ground contact time and improve running economy. Full-length plates provide maximum propulsion; partial plates offer flexibility alternatives.

CenterPath Technology

CenterPath is Saucony’s stability system using asymmetric midsole geometry, a wider platform, and high sidewalls to cradle the foot. The construction places additional cushioning on the medial side to guide stride mechanics and reduce excessive pronation.

How Is CenterPath Different from Old-Style Stability?

Traditional stability used dense EVA posting — rigid blocks that felt intrusive. CenterPath uses asymmetric geometry and high sidewalls that guide your foot without creating a rigid sensation. The result is stability that feels natural — support where biomechanically beneficial, freedom where it is not needed.

D3O® Armor

D3O® is a patented non-Newtonian impact protection material developed by D3O Lab (UK, 1999). The technology is rate-sensitive: molecules flow freely during normal movement but lock together instantly on impact to absorb and dissipate energy.

How Does D3O® Feel to Wear?

Soft and flexible during normal movement — you barely notice the armour. Only on impact does it lock rigid. This is the fundamental advantage over traditional hard armour: D3O moulds to your body and moves with you, making it genuinely comfortable for extended wear. Replace D3O inserts after any significant impact.

Drop / Heel-to-Toe Offset

Drop measures the height difference between a shoe’s heel and forefoot in millimetres. A shoe with 30mm heel stack and 20mm forefoot stack has a 10mm drop. Running shoes range from 0mm (zero-drop) to 14mm, with 10mm as the traditional standard.

Does Drop Affect Injury Risk?

Drop influences foot strike pattern, muscle loading, and where stress concentrates. Lower drops increase calf and Achilles stress; higher drops reduce lower leg loading but increase knee stress. Neither is inherently safer — the right drop depends on your biomechanics, running style, and injury history. If transitioning between categories, do it gradually.

EndoFit™

EndoFit is Salomon’s internal fit sleeve that hugs the foot, creating a sock-like inner layer for secure, comfortable fit. The gusseted tongue integrates with the sleeve to prevent shifting during movement.

Energy Foam

Energy Foam is Salomon’s newest cushioning compound combining EVA with olefin block copolymers (OBC). This dual-material formulation delivers lower weight, higher energy return, better vibration dampening, and a softer feel than traditional EVA.

EnergyCell™+

EnergyCell+ is Salomon’s high-rebound midsole compound — EVA blended with polyolefin elastomers for exceptional energy return, cushioning, and durability.

EVA Foam

EVA (ethylene-vinyl acetate) is a closed-cell foam copolymer and the most widely used midsole material in footwear. Vinyl acetate content (10–40%) determines softness and flexibility.

Why Do Running Shoes Wear Out?

EVA air pockets compress with use, gradually losing their ability to cushion impact. The shoe may still look fine externally while the midsole has degraded internally. At 300–500 miles, most EVA midsoles have lost enough cushioning to affect comfort and increase injury risk. Higher-tech foams (TPU, PEBA) last longer but cost more.

EVERUN

EVERUN was Saucony’s TPU-based cushioning technology, preceding the current PWRRUN foam family. The compound used thermoplastic polyurethane for consistent cushioning and energy return, establishing the foundation for Saucony’s current performance foams.

FormFit

FormFit is Saucony’s 3D approach to personalised fit, encompassing underfoot cushioning, upper construction, and interior comfort elements. The system uses an underfoot cradle that shapes to individual foot contours.

incrediRUN

incrediRUN is Saucony’s newest superfoam, introduced in 2025. The proprietary TPEE (thermoplastic polyester elastomer) compound is described by Saucony as their “most resilient foam ever used in a running shoe.”

Matryx®

Matryx is a high-performance woven fabric developed by Chamatex Group in France, featuring individually coated polyamide and Kevlar yarns. The material combines exceptional abrasion resistance with lightweight breathability — up to 200 g/m² moisture vapour transmission.

NovaPoly™

NovaPoly™ is a degradable recycled polyester yarn co-developed by HUGO BOSS. The technology transforms textile waste into performance yarn enhanced with a natural additive enabling degradation in anaerobic microbial environments — addressing microplastic pollution.

OptiFoam

OptiFoam is Salomon’s lightweight EVA-based cushioning foam. Standard OptiFoam provides balanced cushioning; OptiFoam+ blends EVA with PEBA for enhanced energy return; OptiFoam² delivers premium energy absorption.

Pebax® / PEBA Foam

Pebax® is Arkema’s trade name for polyether block amide (PEBA), the thermoplastic elastomer foam that revolutionised running footwear. Nike’s Vaporfly (2017) first commercialised PEBA as ZoomX, establishing the “super shoe” category.

Is PEBA Worth the Premium?

For serious runners, yes. The measurable improvement in running economy translates to faster times at the same effort. According to Arkema, PEBA delivers 80–85% energy return — significantly better than TPU or EVA alternatives. The trade-off is price and potentially shorter midsole lifespan under heavy daily use. PEBA excels as a race-day or key-session foam.

PWRRUN+

PWRRUN+ is Saucony’s TPU-based expanded foam — their version of Adidas Boost. Steam-fused TPU beads create interconnected cell structures delivering soft, luxurious cushioning with exceptional durability.

PWRRUN

PWRRUN is Saucony’s foundational EVA-blend midsole foam, providing reliable cushioning with high shock absorbency. Serves as Saucony’s workhorse compound across their core running lineup.

PWRRUN HG

PWRRUN HG (High Grade) is Saucony’s premium PEBA foam manufactured using supercritical nitrogen infusion. Approximately 95% claimed energy return — Saucony’s highest performing foam prior to incrediRUN.

PWRRUN PB

PWRRUN PB is Saucony’s premiere PEBA-based foam using expanded Pebax beads. Independent testing measures ~88% energy return, weighing roughly half of traditional EVA at equivalent volume.

Quicklace™

Quicklace is Salomon’s patented lacing system featuring Kevlar-reinforced cords and a single-pull tightening mechanism. The minimalist construction replaces traditional laces with ultra-strong synthetic string and an S-buckle lock.

Rock Plate

A rock plate is a rigid protective insert between midsole and outsole, shielding the foot from sharp rocks, roots, and debris on technical terrain. Materials include TPU, nylon, or carbon fibre, at 1–2mm thickness.

SensiFit™

SensiFit is Salomon’s upper construction that cradles the foot from midsole to lacing system. Welded overlays (“SensiFit Wings”) integrate with the lacing system to wrap the midfoot and forefoot in a supportive cage.

SPEEDROLL

SPEEDROLL is Saucony’s rocker geometry technology — a midsole shape design rather than a foam compound. The curved midsole profile combines elevated cushioning with a stiff forefoot to create continuous forward momentum throughout the gait cycle.

What Does SPEEDROLL Feel Like?

Saucony describes it as “the feeling of running faster without working harder.” The curved geometry naturally guides the foot from heel strike to toe-off, creating a rolling sensation that encourages efficient forward propulsion. Once you feel it, you understand why the Endorphin series has a loyal following.

Stability vs Neutral

Stability and neutral describe two categories of running shoes differentiated by pronation control. Neutral shoes provide cushioning without correcting foot motion. Stability shoes incorporate structural elements that reduce excessive inward foot roll (overpronation).

Does It Really Matter?

Yes. Shoe selection influences injury risk and running efficiency. Overpronators in neutral shoes may experience increased stress on knees, shins, and plantar fascia. Neutral runners in stability shoes may find excessive correction uncomfortable. If you are unsure, try both types in store — the right shoe feels natural and supportive without restriction.

SugarSole™

SugarSole™ is UGG’s sustainable outsole technology manufactured from fast-growing sugarcane foam, replacing petroleum-based ethylene with plant-derived alternatives.

Supercritical Foam

Supercritical foam is midsole material manufactured using nitrogen or CO2 in a supercritical state — neither gas, liquid, nor solid. The physical foaming process produces lighter, more responsive midsoles than traditional chemical foaming.

TPU

Thermoplastic polyurethane (TPU) is a flexible, durable polymer combining properties of plastic and rubber. In footwear, expanded TPU (eTPU) beads create lightweight, energy-returning midsole foams.

Treadlite by UGG™

Treadlite by UGG™ is a proprietary outsole compound using RMAT® technology — a rubber-based material delivering exceptional rebound, durability, and lightweight performance. Launched Spring 2015, Treadlite marked UGG’s first major foray into technical footwear innovation.

UGGcycle™

UGGcycle™ is UGG’s leather-free sheepskin alternative designed for consumers seeking animal-product-free footwear. The material replicates the appearance and texture of traditional sheepskin without using animal-derived materials.

VECTIV™

VECTIV™ is The North Face’s proprietary trail running platform combining propulsion plates, rocker geometry, and advanced midsole foams. Launched in 2021 as the first trail running shoe with an integrated carbon fibre plate.

What Makes VECTIV™ Different from Standard Trail Shoes?

According to The North Face, the integrated plate-and-rocker system improves running efficiency on technical terrain — not just on smooth roads where carbon plates were originally designed. The rockered midsole promotes smooth transitions while the stability plate wings prevent the lateral roll that plagues many plated shoes on uneven surfaces.

Vibram®

Vibram is an Italian company manufacturing high-performance rubber outsoles since 1937. Founder Vitale Bramani developed the Carrarmato sole — inspired by tyre treads — after an alpine tragedy highlighted inadequate footwear traction. The distinctive yellow octagon logo indicates Vibram rubber.

Why Is Vibram® Considered the Gold Standard?

Nearly 90 years of rubber compound development and the broadest range of terrain-specific formulations in the industry. Vibram Megagrip dominates premium trail running outsoles because it delivers consistent grip on wet rock, dry dust, and everything between. The compound balances grip and durability better than most proprietary alternatives.

Construction Methods

Denim & Tailoring

What Is Stretch Denim?

Stretch Denim Quick Facts

• Composition: Cotton base with 1–5% elastane (spandex/Lycra®)
• Stretch capacity: 10–15% at 1–2% elastane; 30–60% at 3–5%
• Recovery rate: 95%+ for premium variants after repeated extension
• Lifespan: Standard elastane loses 20–30% elasticity after 50 washes at 40°C
• At OD's: BOSS Delaware slim-fit jeans, Jacob Cohen stretch styles

How Does Stretch Denim Work?

Elastane fibres are typically introduced in the weft yarns, creating crosswise stretch. Bi-stretch constructions incorporate elastane in both warp and weft for 4-way movement. Technologies like LYCRA® T400® fibre use a helical coil structure (polyester-based) for enhanced durability through harsh washing processes. Dual-core yarns combine multiple stretch technologies for maximum recovery.

How Should You Care for Stretch Denim?

Avoid high heat — it degrades elastic properties faster than any other factor. Wash at 30°C maximum. Avoid tumble drying on high heat. Skip fabric softener, which coats elastane fibres and reduces their stretch capacity. Hang dry or tumble on a cool setting. Proper care preserves elasticity significantly longer than the 50-wash standard.

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Performance & Active

What Is HyperFlow™ Fabric?

HyperFlow™ Quick Facts

• Brand: Reprimo (Manchester, founded 2023)
• Design philosophy: Tested in professional fight camps — 6 intensive sessions per week
• Ambassadors: WBA featherweight world champion Nick Ball, UFC fighter Luke Riley
• Construction: Three-tier moisture management system
• At OD's: Featured across Reprimo T-shirts, compression layers, and performance tops

How Does HyperFlow™ Work?

Layer 1: Hydrophobic Outer

Actively repels moisture, preventing saturation and fabric cling. Keeps the exterior dry during intense training.

Layer 2: Capillary Core

Pulls sweat from the skin surface and channels it outward for accelerated evaporation through capillary action.

Layer 3: Ventilated Micro-Fibre Weave

Enhances breathability through optimised air circulation and heat dissipation. Anti-microbial treatment inhibits bacteria for extended freshness.

Collections

HyperFlow appears across Reprimo's Motion, Flight, and Summit collections. Poly-elastane and polyamide blends deliver stretch, durability, and rapid-dry properties.

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Brand Guides

Explore how these technologies and construction methods are used across our brand portfolio. Each guide covers brand history, key technologies, sizing, and care instructions.

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