Material: Chemical fiber surface + Self-adhesive silicone bottom, Cleaning type: hand wash, dry cleaning, vacuum cleaner Quantity: 1/5 sets, self-adhesive, easy to use, reusable Features: strong adsorption, , 3cm 90° protection right angle, protect your feet and heel, avoid collision, sound insulation Usage: there is a protective film on the back surface of the silicone layer, Before use, the protective film must be completely torn off, The silicone layer can come in contact with the surface of the stairs and can be arranged stair treads carpet mats for indoor stairs，soft cushioned，protect floors，reduce noise，easy to install and washable.