This Carhartt Force top is made of a specially constructed. fabric built to handle a hard day's work. 100% polyester; Force FabricForce Fabric wicks moisture, resists stains and fights. odor-causing bacteriaRelaxed fitComfortable rib-knit crewneck collarLeft-side chest pocketSide-seamed construction prevents uncomfortable twistingTagless label for irritation-free comfortWeight: 4.25 oz.