NIKE Men's Therma-Fit KO Chainmaille Training Pants-Gray-XL 100% Polyester Chainmaille knit texture blocks out wind and cold with an armor-like effect to help keep you warm and comfortable The interior fabric has a brushed surface for warmth and feels soft against your skin Tailored fit gives you plenty of room to move while reducing bulk Adjustable toggle at hem for a personalized fit Zippered side pockets for secure storage