This mid weight Carhartt force base layer quarter-zip for cold weather Works as hard as you do to keep you warm, dry, and odor free throughout the work day. Smooth flat-lock seams and tag less label enhance comfort. Rugged flex fabric moves with you and fast dry technology wicks away sweat. There's a convenient zip pocket on chest. The mock-neck collar with quarter length zipper unzips easily to release the heat when you're working hard. The concealed thumb loops keep your sleeves in place when you put on another layer.