· COMFORTABLE | High-density nitrile-blended cushion helps eliminate pressure to the lower back and legs, providing superior comfort· SAFE | Certified high-traction by the National Floor Safety Institute (NFSI); sloped edges provide a safe transition from floor to mat; rubber surface is slip-resistant even when wet· DURABLE | Nitrile-blended cushion provides years of useful service life; cushion is molded, not glued, to the nitrile rubber surface so it will not separate; edges will not crack or curl· VERSATILE | Welding safe; grease/oil proof surface and grease/oil resistant cushion; chemical resistant; ESD rating of electrically conductive· MADE IN THE USA | Solid black mat is 7/8-inch thick. 2' x 3' mat actually measures 23" x 32", but please note that mat sizes are approximate as rubber shrinks and expands in conjunction with temperature and time. Tolerable manufacturing size variance is 3-5%.