Nylon vs Polyester in Activewear

Nylon (Polyamide): Soft And Premium

Nylon, listed as "polyamide" on many tags, is the softer, more luxurious base fiber. It has a smooth, matte, second-skin hand-feel, which is exactly why premium soft leggings — the Lululemon Align and its buttery dupes — are built on nylon-spandex blends. It is also strong and durable. The trade-off: nylon absorbs a bit more moisture and can cost more. The CRZ Butterluxe and HeyNuts use nylon (polyamide) for exactly this feel.

Polyester: Wicking And Durable

Polyester is the better sweat-wicker and the more budget-friendly base. It is hydrophobic (water-repelling), so it moves sweat to the surface to evaporate — ideal for high-sweat workouts. It is also durable, holds color well, and resists shrinking. The trade-off is it can feel less soft and more "technical" than nylon, and it is more prone to holding odor. The compression-focused 90 Degree by Reflex Power Flex uses a polyester blend.

Nylon vs Polyester At A Glance

Which To Pick

Pick nylon for softness and lounge; pick polyester for sweat and value. If you want that buttery, barely-there Align feel for yoga and everyday wear, choose a nylon (polyamide) blend. If you run hot, sweat heavily, or want performance gym wear at a lower price, a polyester blend wicks better. Both are almost always blended with spandex for stretch. Match the fiber to your workout — see best leggings by workout.

FAQ

Is nylon or polyester better for leggings?

Neither is universally better. Nylon (polyamide) is softer and more premium-feeling, ideal for buttery yoga and lounge leggings. Polyester wicks sweat better and costs less, suiting high-sweat gym wear. The best choice depends on whether you prioritize softness or moisture management.

Why are soft leggings made of nylon?

Nylon, often listed as polyamide, has a smooth, matte, second-skin feel that polyester cannot quite match. That is why premium soft leggings like the Lululemon Align and its buttery dupes are built on nylon-spandex blends, chasing that plush, weightless hand-feel.

Does polyester wick sweat better than nylon?

Yes. Polyester is hydrophobic, meaning it repels water and moves sweat to the fabric surface to evaporate, so it wicks better and dries faster. Nylon absorbs slightly more moisture, which makes polyester the stronger choice for high-sweat, high-intensity workouts.

Which fabric holds odor more, nylon or polyester?

Polyester is more prone to holding onto odor because bacteria that cause smells cling to the fiber more readily. Nylon tends to resist odor better. Washing promptly and avoiding high heat helps with both, but polyester activewear often needs more frequent washing.