These indoor mats feature ribbed polypropylene carpeting which captures dirt and moisture on contact and then keeps them in the mat and off of other areas in your building. Features chemical-resistant vinyl backing. Ideal for use on hard surface floors and low-pile carpet, and in entrance ways, hallways, lobbies, and low traffic walkways. Indoor/Outdoor: Indoor; Compatible Surface: Hard Floors; Mat Shape: Rectangular; Mat Surface: Carpeted.