Multipurpose Apparel: Our men’s long johns allow for minimal layering in cold to very cold conditions during low- to medium-exertion activities; Perfect for casual or active wear. Comfortable Base Layer: Our men’s thermal shirt is constructed of a comfortable cotton blend enhanced with polyester for added stability and utility. Efficient Design: Our tagless long-sleeve thermals for men are equipped with convenient rib cuffs and a drop tail that provides coverage without restricting freedom of movement. Relaxed Fit: Our men’s thermal long-sleeve shirt features a tagless design and flat seams for comfort; Fits loose on the body to allow for full range of motion. Breathable, Durable Fabric: Our thermal shirts for men feature inner and outer layers constructed from a blend of 60% combed ring-spun cotton and 40% polyester. Machine Wash. Pull On closure. Imported. 60% Combed Ring Spun Cotton, 40% Polyester.