3 chamber system with additional chamber for emergencies, all round rope, handles, sea water resistant boat skin, holder for engine mounting, repair set, GS-tested for your safety. Extra-strong boat skin made of 3-layer PVC material guarantees high resistance to abrasion, UV rays, oil, and seawater. Features 2 Boston valves for rapid inflation and deflation, rock protection, and rudder mounts with moveable rudder pins.