M+A Matting 265 WaterHog Masterpiece Select Polypropylene Fiber Entrance Indoor Floor Mat, SBR Rubber Backing, 3' Length x 2' Width, 3/8" Thick, Nutmeg Unique ridged construction effectively traps dirt and moisture beneath shoe level Green Friendly rubber backing has 20 percent recycled rubber content Exclusive "water dam" border keeps dirt and water in the mat and off the floor, minimizing slip hazards and floor damage For indoor use only Certified slip-resistant by the National Floor Safety Institute