Comfortable Collection indoor stair treads offer polypropylene – olefin soft pile machine made construction with skid slip resistant rubber latex backing which works on most hardwood, marble etc stairs. These stair treads are exclusively made in Turkey. Competitive pricing meets with great quality. Includes : Set of 15 Stair Treads : Color : Navy : Protect your stairs and create traction : Stain Resistant : Mildew Resistant : Fade Resistant : Indoor Use : Rubber backing will not work on carpet surface. In order to secure the stair treads in place, double-sided carpet tape required (not included) : Approx Stair Tread Size: 8 inch x 30 inch (%3 may differ) : Machine washable without detergent , Do not use detergent (Cold/Cold, Delicate Cycle, No Dryer, No Bleach, Hang or Lay Flat to Dry) : Easy to clean and wash