The 18″ Straight Bumper protects the side and top of the dock with 1 1/4″ cushion above dock level. The 18″ straight bumpers is made from tough marine grade vinyl. The straight bumpers are solid flaps attach easily to any dock. The 18″ straight bumpers offers superior cushioning which protects boats and docks from each other. Permanently molded color into the vinyl and will not transfer to the hull. Manufactured by Ultimate Dock & Pier Products.