A great extra layer carhartt's duck vest is made of 12-ounce firm-hand 100 percent ring-spun cotton duck. For warmth it features a nylon lining quilted to arctic-weight polyester insulation. It has a brass front zipper with inside storm flap and an inside pocket with hook-and-loop closure. It has two large lower front pockets and the drop tail adds extra coverage. This vest fits slightly loose for a comfortable fit, slightly below the waist so giving room for a tool belt if required. Or just wear cool with a pair of Carhartt denims. Sizing is as follows: Small: Pit to Pit = 20.07"/51cm, Medium: Pit to Pit = 21.65"/55cm, Large: Pit to Pit = 24"/60cm Length = 71cm, XL: Pit to Pit = 25.19"/64cm Length = 75cm.