This Professional Kitchen Cutting Board is made of Super High Density Polyethylene Plastic. The cutting boards are Commercial Dishwasher Safe, including the spike temperature that exceeds 185Â°. They are the most dense board you can buy that will not dull your knives. This cutting board is made of BPA-free, plastic. The material is non-absorbent, non-porous, and will not harbor odors, stains, or harmful bacteria. It is gentle on knives, keeping their blades from getting dull quickly. Ideal surface: This cutting board is ideal for cutting, slicing and chopping meats, poultry, fish and vegetables. There are no limitations. Versatile: This board is reversible for double the cutting surface and features a handhold for added control and stability.