Rugged grooves and ribbed needle punch polypropylene fibers help remove dirt and moisture from shoes. Wear-resistant, colorfast design for light to medium traffic areas. Beveled edges help reduce the risk of tripping, while the vinyl backing helps keep mat from slipping. Vinyl backing made with natural organic resin blend. Contributes to LEED Certification. Manufacturer's limited one-year warranty. Overall thickness 5/16.