Adult 4-Buckle Nylon Life Jacket Nylon Outer and Nylon Liner w/ Closed Sides Made with smooth 200-denier premium nylon 4 - 1-1/2" adjustable belts with EZ Quick Release Buckles Perfect for all flat water boating activities (water skiing, wakeboarding, canoeing, general boating USCG(U.S. Coast Guard) Approved