HDPE (Rigid High-Density Polyethylene) is a sheet that has a smooth finish with high-tensile strength. Sizes: 4' x 8' x .125", 4' x 8' x .25", 4' x 8' x .375". lor: natural. Cutting boards have been tested and certified. it CuttingBoard family of products now with advanced antimicrobial technology to produce a more effective application