WARM Varitherm Flex Weight Pants have a lightweight, second-skin feel that flexes with every move. Provides warmth without adding extra weight. Champion Vapor technology with X-Temp3; dries faster as your body heat rises so you always keep your cool. Wicks sweat away from skin and dries quickly for superior comfort. Ultra soft brushed back fabric helps trap body heat for warmth without the weight. Close-to-the-body flexes and stretches for total mobility. Chafe-resistant stitching is soft on skin. No-bind elastic waistband. Functional fly close.