Leggings & Tights -- The Foundation of Modern Activewear
Leggings are the backbone of modern activewear -- the four-way-stretch layer that works for running, training, yoga and everyday wear alike. But not all leggings are equal: the difference between a pair that supports, stays opaque and holds its shape and one that sags and goes see-through comes down to fabric, fit and construction. This hub covers fit and fabric, leggings by activity, and how to choose and care for them, featuring PE Nation and Sweaty Betty. It links to the flagship activewear types guide and the fit and sizing hub.
Fit & Fabric
Squat-Proof Opacity
Staying opaque through every movement.
What it means
Squat-proof means the fabric stays fully opaque when stretched over a bend or squat, rather than going sheer. It comes from a dense, high-quality knit with enough fabric weight and the right fibre blend, so nothing shows through under tension.
Why it matters
Opacity is the number-one thing people want from leggings and where cheap pairs fail. Quality technical fabrics from brands like Sweaty Betty are designed to stay opaque -- browse Sweaty Betty leggings.
Waistbands & Support
The band that holds everything in place.
What to look for
A good waistband sits securely without digging in or rolling down. High-rise bands offer core support and coverage and are the most popular; wide bands distribute pressure comfortably. Some include a hidden pocket or drawcord for a locked-in fit.
Why it matters
The waistband decides whether leggings stay put through a whole session -- a rolling or slipping band ruins the wear. High-waisted support is why so many prefer a high-rise cut for training and everyday.
Legging Fabric & Stretch
Four-way stretch that recovers its shape.
What it means
Leggings use technical knits -- usually a nylon or polyester blend with elastane -- for four-way stretch, moisture-wicking and shape recovery. A higher elastane content adds compression and rebound; a soft brushed inner adds warmth. Good fabric holds its shape wash after wash.
Why it matters
Fabric decides opacity, support, feel and longevity all at once. The fabrics hub explains stretch, wicking and recovery, and why they matter for leggings.
By Activity
Running & Training Leggings
Support and pockets for high-output work.
What to look for
For running and training, choose leggings with compression, moisture-wicking fabric, a secure high waistband and pockets for a phone or keys. Reflective detail helps for low-light running. Full or three-quarter lengths both work depending on the weather.
Why it matters
High-output activity demands support, sweat management and somewhere to stash essentials. Browse On Running leggings and PE Nation leggings.
Yoga & Studio Leggings
Soft, flexible pairs for floor and flow.
What to look for
For yoga and studio work, prioritise a soft, buttery feel, total flexibility and a comfortable, non-restrictive waistband that stays put in inversions. A brushed or high-elastane fabric moves with deep stretches without pinching or sagging.
Why it matters
Studio work asks for comfort and freedom above compression, and a waistband that will not slip when you fold or invert. Sweaty Betty is a leading choice -- see the Sweaty Betty brand guide.
Everyday & Athleisure Leggings
Comfortable pairs that go anywhere.
What to look for
For everyday wear, look for a flattering fit, a comfortable waistband and a considered colour or finish that works beyond the gym. Athleisure leggings blend the comfort and support of technical pairs with a look that suits the school run and coffee.
Why it matters
Everyday leggings earn their keep by being versatile and comfortable all day. PE Nation bridges gym and street -- see the PE Nation leggings guide.
Choosing & Caring
Getting the Fit Right
Sizing leggings for support and comfort.
What to do
Leggings should feel snug and supportive without pinching, digging in or going sheer. Size for your true measurements, do a squat test for opacity, and check the waistband stays put. Between sizes, size up for comfort or down for more compression, depending on preference.
Why it matters
The right fit delivers the support and opacity leggings are bought for. The fit and sizing hub and Sweaty Betty sizing guide help you get it right.
Leggings Care
Washing to protect stretch and opacity.
What to do
Wash leggings inside out on a cool, gentle cycle, avoid fabric softener (it coats the fibres and cuts wicking), and air dry rather than tumble drying, which degrades elastane. Wash after each sweaty wear to prevent odour build-up in the fabric.
Why it matters
Correct care preserves the stretch, opacity and shape that make good leggings worth it. The care hub covers washing technical fabrics in full.
Frequently asked questions
What makes leggings squat-proof?
Squat-proof leggings stay completely opaque when you bend or squat, rather than turning sheer under tension. It comes down to fabric: a dense, high-quality knit with enough weight and the right blend of nylon or polyester and elastane keeps the fibres close together even when stretched. Cheap leggings use thin, loosely knitted fabric that gaps and goes see-through when pulled tight. The best test is to bend over in front of a mirror in the changing room -- if you can see through the fabric, they are not squat-proof. Quality technical leggings from established activewear brands are specifically engineered to pass this test.
What is the best waistband for leggings?
A high-rise (high-waisted) waistband is the most popular for good reason -- it offers core support, full coverage and a secure fit that stays put through movement, which is why it dominates both training and everyday leggings. A wide band distributes pressure comfortably and resists rolling, while some pairs add a hidden pocket or internal drawcord for an even more locked-in feel. The key is that the band should sit securely without digging in or sliding down. Lower-rise bands can work for lighter wear, but for training, yoga and all-day comfort, a supportive high-rise waistband is hard to beat.
Can I wear leggings for running and yoga?
Yes, but the ideal pair differs slightly. For running, you want compression, moisture-wicking fabric, a very secure waistband and ideally pockets and reflective detail -- support and sweat management matter most. For yoga, you want a softer, more flexible fabric and a waistband that stays put through inversions, with comfort and total freedom of movement prioritised over compression. Many quality leggings handle both well, so if you do a mix, a versatile mid-compression pair with a good high waistband covers you. If you strongly favour one activity, choosing leggings designed for it will feel better.
How should leggings fit?
Leggings should feel snug and supportive all over without pinching, digging in at the waist or going sheer when stretched. Buy for your true waist and hip measurements, then do a squat test to confirm they stay opaque. The waistband should sit comfortably and stay up through movement, and there should be no bagging at the knees or ankles. If you are between sizes, size up for a more relaxed, everyday feel or size down for firmer compression, depending on what you want. The right pair disappears when you wear it -- you should not have to keep adjusting them.
Which brand makes the best leggings?
It depends on what you want. Sweaty Betty is a British favourite prized for flattering fit, supportive squat-proof fabric and versatile studio-to-street pieces, making it a top all-rounder for women. PE Nation is Australian, bold and fashion-led, ideal if you want statement leggings that stand out in and out of the gym. On Running makes clean, performance-focused leggings that coordinate with its running kit. The best brand depends on whether you prioritise fit and versatility (Sweaty Betty), design and standout style (PE Nation), or run-specific performance (On Running) -- the brand guides and the PE Nation vs Sweaty Betty comparison help you decide.