Polyform U.S. G-6 Twin Eye Fender 11in x 30in - Cobalt Blue w/Adapter G-6-COBALT BLUE. Subscribing to the philosophy that quality does not have to cost more they include ribs for extra strength inflation valves for larger sizes and reinforced rope holds for long-term durability.The G Series fender is designed to provide protection and stand-off for vessels between 10 to 40 feet in length. Package Contents: Polyform U.S. G-6 Twin Eye Fender 11 x 30 Polyform U.S. G-6-COBALT BLUE: G-6 Twin Eye Fender 11in x 30in - Cobalt Blue w/Adapter