The extra large Parker Asahi Consumer Cutting Board is specially made to cushion knife blades while repelling bacteria. These boards are made of synthetic rubber that gives while cutting, this minimizes strain on the cutting surface your knife and keeps it sharp longer. The rubber is neither porous nor absorbent making the board easy to maintain, and prevents bacteria, mold, and mildew from growing. An ideal alternative to wood as it is easy to clean, cannot flake/tear and keeps your knife sharp.