Smooth top surface fused to thick sponge foam backing for an attractive, easy-to-clean mat. Oil-, grease- and acid-resistant surface. Ideal for medium- to heavy-duty use. Beveled edges and rounded corners keep mat flat and help reduce the risk of tripping. Spiffy vinyl top. Manufacturer�s limited three-year warranty. Overall thickness 1/2". 24 x 36 Size Shpg. wt. 9 lbs. Black