Types of Knitwear -- A Plain-English Guide to Every Jumper
Knitwear is one of the most confusing corners of a wardrobe -- the same word, "jumper", covers everything from a chunky lambswool roll-neck to a wafer-fine merino crew. The differences that matter come down to two things: the fibre it is knitted from and the way it is knitted. This flagship guide gives you the lie of the land -- the main fibres, the main styles, and how to choose and care for them -- then links you through to the deeper hubs on wool, cashmere, cotton, construction, styles, stitches, quality and care.
By Fibre
Wool Knitwear
The warm, breathable, hard-wearing backbone of knitwear.
What it is
Wool is the classic knitwear fibre -- naturally warm, breathable and resilient. It ranges from fine merino and soft lambswool to rugged Shetland, each suited to a different weight and season.
Why it matters
Wool is the default for good reason: it insulates even when damp, resists wrinkles and odour, and lasts for years. The wool knitwear hub covers every type and how to choose.
Cashmere & Luxury Knitwear
The softest, lightest, most prized natural fibres.
What it is
Cashmere is the fine undercoat of cashmere goats -- extraordinarily soft, light and warm for its weight. Other luxury fibres like alpaca and mohair sit alongside it at the premium end.
Why it matters
Luxury fibres feel and drape like nothing else, but quality varies enormously with grade and ply. See the Italian cashmere guide for what separates great cashmere from the rest.
Cotton & Plant-Fibre Knitwear
Cool, smooth, year-round knits for milder days.
What it is
Cotton knitwear -- including refined mercerised and lisle cottons -- is breathable, smooth and machine-friendly, ideal for spring, summer and layering.
Why it matters
Cotton knits give you the look of fine knitwear without the warmth of wool, perfect for transitional weather. The cotton knitwear hub explains the grades and finishes.
By Style
Crew Necks & Round Necks
The everyday staple that goes with everything.
What it is
The crew neck is a round, close-fitting collar -- the most versatile knitwear style. It layers cleanly over a shirt or tee and works in every fibre from fine merino to chunky lambswool.
Why it matters
A good crew neck is the foundation of a knitwear wardrobe. The styles hub covers crews, V-necks, roll-necks and more, and how to wear each.
Cardigans & Zip Knits
Button and zip knits that work as a light layer.
What it is
Cardigans and zip-through knits open at the front, making them easy to put on and take off and ideal as a mid-layer. They range from fine merino button cardigans to chunky shawl-collar knits.
Why it matters
An open-front knit is the most practical layering piece you can own -- temperature control without pulling anything over your head. See the styles hub for the full range.
Knitted Polos & Roll-Necks
Refined necklines that dress a knit up or down.
What it is
Knitted polo shirts and roll-necks (polo necks) add a more finished neckline -- the knitted polo for a smart-casual collar, the roll-neck for warmth and a clean, modern line under a jacket.
Why it matters
These styles bridge casual and smart. Gran Sasso, BOSS, Paul Smith and Sandbanks all make standout knitted polos -- browse men's polo shirts or the styles hub.
Choosing & Caring
Gauge & Weight
Why the same fibre can feel completely different.
What it means
Gauge is how fine or chunky a knit is -- a high gauge packs many small stitches for a smooth, light knit; a low gauge gives a thick, cosy one. Weight follows gauge and fibre.
Why it matters
Gauge decides whether a jumper layers under a jacket or stands alone as outerwear. The gauge and construction hub explains how to read it.
Spotting Quality
The quick signals that separate good knits from cheap.
What to look for
Look for two-ply yarns, fine even stitching, a dense knit with no thin patches, fully-fashioned shaped seams and a soft but springy handle. Cheap knits feel thin, loose and prone to pilling.
Why it matters
Quality decides whether a jumper still looks good after a winter or pills and sags in weeks. The quality hub gives you the full checklist.
Caring for Knitwear
Keeping jumpers soft, sized and bobble-free.
What to do
Wash knitwear gently in cool water, dry it flat in shape, fold rather than hang it, and de-bobble it with a comb or shaver. Wool and cashmere especially need this gentle routine.
Why it matters
Good care is the difference between a jumper that lasts a decade and one ruined in one hot wash. The care hub and de-pilling guide walk through it.
Frequently asked questions
What are the main types of knitwear?
Knitwear is best understood by fibre and by style. The main fibres are wool (merino, lambswool, Shetland), luxury fibres (cashmere, alpaca, mohair) and cotton or plant fibres. The main styles are crew necks, V-necks, roll-necks (polo necks), cardigans and zip knits, and knitted polo shirts. The fibre decides warmth, softness and care; the style and gauge decide how you wear it and how it layers.
What is the warmest type of knitwear?
For pure warmth-to-weight, cashmere is exceptional -- very warm yet light. Among wools, lambswool and Shetland are warmer and loftier than fine merino, and a chunky low-gauge knit traps more air and warmth than a fine high-gauge one. So the warmest knitwear tends to be a chunky cashmere or lambswool piece; a fine merino layer is lighter and better for layering or milder days.
What is the difference between a jumper and a cardigan?
A jumper (or sweater/pullover) is closed and pulled over the head, while a cardigan opens at the front with buttons or a zip. Cardigans are easier to put on and take off and make a better adjustable mid-layer; jumpers give a cleaner single-piece look. Both come in every fibre and gauge, so the choice is about layering and style rather than warmth.
Which knitwear is best for layering under a jacket?
A fine, high-gauge knit in merino wool or cotton layers best -- it is thin enough to sit smoothly under a jacket without bulk, while still adding warmth. Roll-necks and fine crew necks are ideal. Save chunky, low-gauge knits for wearing on their own as a top layer, as they are too thick to layer comfortably.
How do I stop my knitwear bobbling?
Bobbling (pilling) comes from abrasion and is worse on lower-quality, loosely spun yarns. To reduce it, choose finer two-ply yarns and denser knits, wash inside out on a cool gentle cycle, and remove bobbles carefully with a knitwear comb or fabric shaver rather than pulling them. The de-pilling guide covers the technique in detail.