Antifatigue Mat: Ribbed, 4 ft x 6 ft, 1 in Thick, Black, Vinyl over PVC Foam, Beveled Edge. One-inch-thick Notrax® 974 Ergo Mat? Grande? matting offers superior antifatigue support with directional traction to help reduce slips. The long-wearing top surface is fused to a dense sponge base using the exclusive, almost unbreakable UniFusion? bonding process. RedStop? backing is designed to eliminate mat movement on smooth surfaces, without leaving tacky or sticky residue. Beveled edges onall four sides minimize tripping hazards. Packaging: 1/ea