This 12-ounce 100% cotton duck coverall is lined in Carhartt's warmest arctic-weight quilted nylon polyester insulation. It features a variety of utility and tool pockets, as well as, a hammer loop. Two-way leg zippers open to the waist and are covered with protective wind flaps that snap closed. Other features include a split back with bi-swing for ease of movement and rib-knit storm cuffs to keep the cold out. Main seams are triple-stitched and there are double knees with cleanout bottoms -- just to make a tough coverall that much tougher and long-wearing.