Bungalow Flooring 8-1/2 by 30-Inch Indoor and Outdoor Waterguard Stair Treads, Set of 4, Charcoal Versatile, textural Squares pattern is are durable enough to make a good impression for years to come Premium 24-ounce fabric face; non-marking, slip-resistant, commercial grade SBR rubber backing Unique ridged construction traps dirt and moisture Guaranteed against fading, rot, and mildew Suitable for indoor and outdoor use