Nylon & Elastane – The Hidden Engine Behind Modern Active Wear If polyester is the backbone of modern sportswear, nylon and elastane are the fibres that shape how it feels. Nylon gives clothing its strength, smoothness and durability. Elastane gives it stretch, cling and recovery. Together, they create the “second skin” fit that defines leggings, sports bras, compression garments, base layers and performance wear. They make clothing feel supportive, sculpting, flexible and sleek. But while these fibres dominate active wear, very few people know what they actually are or how they behave on the skin during exercise, when heat, sweat and friction change the environment inside clothing. This…

Why Polyester Deserves a Closer Look Polyester is everywhere. In leggings, sports bras, base layers, running tops, gym shorts, jackets, socks, underwear, even bedding and everyday clothing. It is the single most dominant fibre in modern sportswear and for many people, it is the fabric touching their skin more than anything else they own. already introduces this reality. “Polyester is a petroleum derived plastic known as polyethylene terephthalate.” This spoke expands that foundation into a full, evidence aligned deep dive. We explore – What polyester is – How it is made – Why it dominates activewear – What research says about textile chemicals – How polyester behaves on…