Hull Hugr Dock Corner Bumper 12"Hull Hugr Dock Bumpers are constructed from UV-resistant and tear-proof vinyl/polyester tri-laminate, and are filled with high-density closed-cell polyethylene foam. Features: Dimensions: 12" x 12" x 6" x 4"; Color: White; Four corrosion-proof polycarbonate grommets, (one in each corner) for mounting to docks.;