Ironclad's 1st Layer Cold Condition is constructed of a heavyweight micro fiber fabric designed to keep you warm and comfortable while working in harsh environments. A snug fit helps keep in heat while sweat-wicking material construction ensures sweat free comfort. Features a heavyweight moisture wicking micro fiber fabric that keeps skin dry while low profile flat seam stitching feels virtually nonexistent. Ironclad's 1st Layer Cold Condition is anatomically designed for extended range of motion so that whether you're working up high or down low you stay comfortable. Carries a UPF (Ultraviolet Protection Factor) Rating of 30+. Available sizes in M-2XL. Black.