NaturalAreaRugs Attachable Clarence Carpet Stair Treads, 100% Sisal, 9" x 29" (Set of 13) 100% Natural Sisal with Cotton Border, Earth Friendly 2 Velcro sewn on the back of the stair treads Set of 13, Hand crafted by Artisan rug maker, Earth Friendly Stair treads can be removed and reattached to adhesive strips on surface of stairs. For Installation: Attach and reattach stair treads quickly and easily with two self-adhesive hook and loop fastening strips (included)