Al's Liner rubber crumb additives are intended for areas where extra non-skid protection is needed. Whether you are coating your truck bed, a deck, walkway, or boat with Al's Liner, this additive will provide an aggressive texture that will ensure extra traction even on wet surfaces. Al's Liner rubber crumbs are soft and pliable to ensure they are easy on your hands and needs, making them a much better alternative than quartz or sand. The Al's Liners rubber crumb additive is sold in quart sizes (recommended for 1 gallon of protective coating) and offers easy flow and spray pattern through the Al's Liner spray gun. Made by Al's Liner.