TuffRider Women's Wellesley Knee Patch Breeches with Contoured Sock Bottom 48% Micro Nylon, 26% Micro Polyester, 22% Coolmax, 4% Spandex. Imported One of the most comfortable breeches you will ever own Made with a blended fabric and coolmax on the inside keeping you cool and fresh A new sock system, CSB, prevents bunching and a comfortable fit under your boots