The best fabric for gym clothes depends on how you train, but one blend wins for most people: nylon with spandex. This guide breaks down every common activewear fabric, what each one is good at, where it falls short, and how to pick the right one for lifting, cardio or everyday wear.
Quick answer
For most training, a nylon and spandex blend is the best all-round gym fabric: it is compressive, four-way stretch, sweat-wicking and squat-proof. Polyester blends are best for high-sweat cardio, and cotton blends suit casual or low-intensity wear where comfort matters more than performance.
| Fabric | Best for | Watch out for |
|---|---|---|
| Nylon + spandex | Lifting, leggings, squat-proof coverage | Needs a dense knit to stay fully opaque |
| Polyester + spandex | Running and high-sweat cardio | Can hold odour without proper washing |
| Cotton + elastane | Casual and rest-day wear | Absorbs sweat and dries slowly |
Our Performance range is built on technical nylon and spandex blends engineered for compression, stretch and opacity, while the Women's Leggings use a dense seamless knit made to stay squat-proof. For the full breakdown of materials, read our Activewear Fabric Guide.
What is the best fabric for gym leggings?
A nylon and spandex blend with a dense, opaque knit. It gives the compression, four-way stretch and squat-proof coverage that lifting demands.
Is polyester or nylon better for the gym?
Nylon is better for compression and lifting, polyester is better for high-sweat cardio because it is lighter and dries faster. Many technical pieces blend both.
Is cotton good for gym clothes?
Cotton is comfortable for casual or low-intensity wear, but it absorbs sweat and dries slowly, so it is not ideal for hard training.
What fabric wicks sweat best?
Technical polyester and nylon blends wick sweat far better than cotton, pulling moisture away from the skin so it can evaporate.
What makes a gym fabric squat-proof?
A dense knit combined with a high spandex content. The fabric has to stay opaque when stretched over the thigh and glute.
