Abstract: A marine fender is disclosed which protects a vessel and a dock from damage caused by an impact. The fender is in the form of a tube with a substantial thickness, is comprised of polyurethane and has a uniform arrangement of cavities or openings in its outer surface. The cavities are formed by a web of walls and have substantial depth but do not penetrate through the thickness of the tube to the interior. The fender may also be comprised of four layers. The first layer is comprised of a Shore A hardness of between 80 and 90 and is approximately 25 mm thick. The second layer is comprised of a Shore A hardness of between 75-80 and is approximately 50 mm thick. The third layer is comprised of a Shore A hardness of between 55-75 and is approximately 50 mm thick. The fourth layer is comprised of a Shore A hardness of between 80 and 90 and is approximately 25 mm thick.