Rubber reinforced polypropylene carpet ridges traps dirt and water and includes 24 oz fibres for superior absorbency. 100% rubber backing for maximum durability. Recommended as an indoor mat but substitutes as an outdoor mat in warm to moderate climates. Simple to clean, just vacuum or hose off. Not recommended for use in areas exposed to grease or petroleum products. Passes flammability standards DOCFFI-70. Available in smooth backing for hard surfaces or gripper backing for carpeted surfaces.