Slip into something carhartt tough. This crewneck top is made of 8-ounce, 95-percent polyester/5-percent spandex knit and it keeps the sweat down and fights odors. It has smooth flat-lock seams for comfort. Rib-knit cuffs and the crewneck keep in warmth, which this top is all about. A drop tail covers your butt. This is the wing man to the base force super-cold weather bottom. They go together like Sunday and football.