This is the XS Scuba Deluxe Backpack Features: Strong, injection-molded solid plastic 2 in. (50 mm) black harness webbing Adjustable webbed tank band with cam buckle and traction pad Will accommodate cylinder diameters from 6.9 in (175 mm) to 8.0 in (203 mm) Stainless-steel quick release buckles at shoulder and waist Built-in carry handle Overall length is 16 in (41 cm) The Deluxe Backpack is a modern, 2-piece design. It features a rear tank cradle with a built-in tank traction pad. The tank cradle is fastened to the main backpack using two large brass bolts.