M+A Matting 210 Waterhog Classic Tile Polypropylene Fiber Entrance Indoor/Outdoor Floor Tile, Square Pattern, SBR Rubber Backing, 18" Length x 18" Width, 1/4" Thick, Medium Grey (Case of Anti-Static 100 percent premium polypropylene fiber system dries quickly and won't fade or rot When wet, the rubber-reinforced surface allows water to be wicked to the bottom of the mat, below foot traffic and providing a slip-resistant surface Colorfast: solution dyed for excellent light and we fastness Unique ridged construction effectively stores dirt and moisture beneath shoe level Damaged or worn tiles can be replaced easily