ANTIFATIGUE RUNNER, ANTI-SLIP BACKING NO, NUMBER OF BORDER STRIPES 0, RESISTANCE PROPERTIES INSULATION, TEAR RESISTANT, WEAR RESISTANT, X-RAY DETECTABLE NO, WIDTH 4 FT, USDA CERTIFIED NO, WELDING SAFE NO, WASHDOWN SAFE NO, SERIES 511 MARBLE-TUFF(TM), THICKNESS 1/2 IN, THERMALLY INSULATING YES, SURFACE MATERIAL VINYL, SURFACE TEXTURE SMOOTH, NSF/ANSI 52 NO, REVERSIBLE NO, SURFACE DESIGN MARBLE, NUMBER OF BEVELED EDGES 4, NFSI HIGH TRACTION CERTIFI