No Adhesive: Anti-slip stair treads enhance safety when going up and down stairs. They do not damage stairs, as the non-slip bottom is not made with glue or permanent adhesive, and leaves no residue when removed. Please note that these rubber stair mats are intended for indoor use only. Machine Washable: Indoor stair treads are easy to clean due to their smooth surface. They can be cleaned by vacuuming, mopping, or machine washing, making it simple to remove hair and dust from stair carpet runners. Low Profile & Quick Dry: Step rugs maintain their shape and color after washing. The anti-slip stair treads can be cut to fit any size with scissors, ideal for uniquely sized steps. Each piece measures 8" x 30", and includes 15 pieces per pack. These rubber stair treads fit most indoor stairs, and the quantity meets the needs of most households. Rubber Backed: Non-slip indoor stair treads feature a rubber backing that securely attaches to the step surface, helping protect your family, children, and pets. The non-slip grip does not use adhesive, so it wont damage stairs or leave residue upon removal. Fully Refundable: We are committed to customer satisfaction. If you are not completely satisfied with your non-slip stair treads, contact our support team for a replacement or refund. No questions asked and no hassle required.