ANTIFATIGUE RUNNER, ANTI-SLIP BACKING YES, NUMBER OF BORDER STRIPES 1, RESISTANCE PROPERTIES DYNA-SHIELD(R), INSULATION, TEAR RESISTANT, WEAR RESISTANT, X-RAY DETECTABLE NO, WIDTH 4 FT, USDA CERTIFIED NO, WELDING SAFE NO, WASHDOWN SAFE NO, SERIES 419 DIAMOND SOF-TRED(TM) WITH DYNA-SHIELD(R), THICKNESS 1/2 IN, THERMALLY INSULATING YES, SURFACE MATERIAL CLOSED CELL PVC FOAM, SURFACE TEXTURE RAISED PATTERN, NSF/ANSI 52 NO, REVERSIBLE NO, SURFACE DES