35” Dynamically Adjustable Boat Bumpers. The best quality marine grade vinyl offering superior strength, cushioning and a high gloss finish. mounted on our exclusive and rugged aluminum bracket system for easy installation and adjustment on any aluminum, wooden, or steel dock. Provides the ultimate in cushioning for parking boats at your dock. Molded-in ribs on the interior of the UltraGard SSD ensure a very soft, but extremely durable bumper that will not collapse. Oh, and did we mention they are really good looking?