Pet Collection Indoor Stair Treads offer machine-made nylon construction with non-slip rubber backing that attaches to most hardwood, marble etc. These stair mats are inspired by your pets lifestyle. Great value for money. Contains: Set of 13 Stair Treads | Colors in Stair Treads: Beige, Multi | Protect Your Stairs and Create Traction | Stair Resistant | Mildew Resistant | Fade Resistant | Indoor Use Only | Rubber Backing Does Not Work On Carpet Surface To secure the stair treads in place, double sided carpet tape is required (not included). Size of the stair mat: approx. 8" x 26.3" (±% 3 may vary) Machine washable without detergent, do not use spin cycle (cold/cold, gentle cycle, no dryer, no bleach, hang or lay flat to dry). Easy to clean and wash.