Hull Hugr Dock BumperHull Hugr Dock Bumpers are manufactured from a UV-resistant and tear-proof vinyl/polyester tri-laminate. These dock bumpers are filled with high-density closed-cell polyethylene foam. Features four corrosion-proof polycarbonate grommets for mounting to docks. Sizes Available:HHB-24W: 24" x 5" x 2.5"HHB-36W: 36" x 6" x 4"