18" x 24" x 1/2" thick. All rubber. Reversible. Rubber surface prevents knife slippage. Non-porous, non-toxic. Can be resurfaced by sanding. Clean with soap and water. Won't crack, splinter, chip or swell. Won't absorb liquids or odors. Lasts far longer than wood or plastic. Resiliency preservers knife edge longer. NSF Certified.
