Nike Men's KO Chainmaille Men's Pants, Magnet Grey, Small Heavyweight Nike Therma-FIT fabric keeps cold air out and locks in heat The interior fabric has a brushed surface for warmth and feels soft against your skin The chainmaille knit texture blocks out wind and cold with an armorlike effect to help keep you warm and comfortable in tough conditions The tailored fit gives you plenty of room to move while reducing bulk so you can focus on training Adjustable toggle at hem for a personalized fit Zippered side pockets for secure storage