M+A Matting 272 Waterhog ECO Elite Polypropylene Entrance Indoor/Outdoor Floor Mat, Half Oval, 1.8' Length x 3' Width, Camel Polypropylene fiber system dries quickly and is suitable for indoor or outdoor use Unique ridged construction effectively stores dirt and moisture beneath shoe level Easy to clean; just vacuum or hose off and hang to dry Colorfast: solution dyed for excellent light and wet fastness Not adversely affected by salt or ice melt