The Gripper Bar Board is made of the highest quality Polypropylene cutting surface thermally bonded to a soft bed of gripping octagons, providing Architec"s famous non-slip grip. The surface won"t dull knife blades and the soft feet grip the countertop so the cutting surface does not move while you are working. The Bar Board is sized just right for use indoors or out, in the kitchen or on a bar. Use several for cutting different garnishes. The Gripper Bar Board is dishwasher "encouraged".