The Dock Pro 18″ Straight Vinyl Dock Bumper protects the side and top of the dock. The bumers have a 1 1/4″ cushion above dock level. The Dock Pro vinyl dock bumper are also made from the same tough marine grade vinyl as our fenders. The dock bumper also have sold flaps that attach easily to any dock. The dock bumper has superior cushioning that protects boats and docks from each other. The color is permanently molded into the vinyl. In addition, this coloring will not transfer to the hull of the boat. The bumper also measures 18″ long and is a straight mount piece.