Hatteras Indoor/Outdoor Flatweave Carpet Stair Treads by Dean Stair Treads. Color: Hatteras Chevron Sand Piper Gray/Black. Approximately 29 inches by 9 inches. Set includes 15 pieces. High quality Hi UV stabilized fade resistant polypropylene low profile flatweave construction. Similar to natural sisal without the rough sisal feel. Simply place your stair tread rugs on your staircase and go. No tapes, adhesives, staples, glue, or Velcro needed. And rest assured, they won't move and they won't damage your hardwood either. Amazing non-skid padded backing prevents movement, adds cushion. Each tread is bound with wide black binding tape. Helps prevent slips on your hardwood stairs. Provide warmth and comfort Extends the life of your hardwood stairs. Great for dogs (facilitates navigation of slippery stairs). Easy do-it-yourself installation.