Our carpet stair treads is designed with non slip backing.The stair rugs can firmly adhere to your stairs.This non-slip backing is helpful to keep the stair carpet sturdy and prevent shifting or slipping.You Just clean stairs surface,remove backing film and put stair runner on floors. We use our own factory's self-developed anti-slip material. Our stair runners for wooden steps has no sticky glue or tape,but still can stay in place.Through testing, sticky glue or tape residue will damage your stairs and hard to remove after long time to use. But our staircase step treads won't.You can easily remove them without any residue.They are reusable.You won’t feel strong stickiness after touching.But they are really non slip. The rug for stairs is made of wear-resisting and softer Polyester fibers.Proper thickness ensure that you can comfortably step on our stair wood treads.The stair runner rug also can reduce the noise.You can feel the softness,the quietness and safety when you step on our stair mats. Our staircase rugs are durable ,and also are easily cleaned.You just use the vacuum to clean dust, scraps and pet hair.Simply threw indoor stair treads into the washing machine.Don't worry about fiber falling.Edge locking technology ensures that carpet stair treads can be machine-washable many times.Step carpet for stairs will still maintain shape and colors,long time lasting reused. Stair treads 4 pack in the package.Size of the step mats are 28 inX9 in,suitable for most indoor stairs.We are always dedicated to providing you with non slip stair rugs.If you have any questions,you can contact us. BEQHAUSE Non-Slip Step Mats Self-Adhesive Stair Treads 28inX9in Stair Grips for Wooden Steps Black Step Pads Soft Edging Stair Rugs 100% Polyester TPE Backing