This 39"W x 19-1/2"L grease resistant mat is made of a heavy duty Nitrile Rubber Blend that provides superior comfort during long-term use. Perforated texture surface provides sure traction and quick drainage. 7/8"thickness provides comfort for workers during a full time shift. Beveled edges on 2 sides for safety. NSF&$174; certified. 3 Year Limited Warranty.