NaturalAreaRugs Royalty Carpet Stair Treads 9" x 29" (Set of 13) Made from durable 100 percent polypropylene wear resistant material for long-term duration and use. Ideal surface to add traction on hardwood with children and pets in mind. Durable, easy to keep clean, and also sound dampening. Dimensions: 9 x29 Includes 13 individual stair treads. For over 50 years, Natural Area Rugs remains to be a trusted brand by offering the best quality area rugs in the market Little maintenance required and easy to install by yourself with double sided adhesive carpet tape (sold separately).