Prevent Slipping: The bottom of the stair treads uses non-slip material that is non-sticky to the touch, but they firmly adhere to the stairs when applied. Therefore, the stair mats provide excellent traction to prevent family and pets from slipping on the stairs. Does not damage the stairs: Take advantage of the pre-applied adhesive bottom that is not glued or permanent adhesive. After removing the treads, it leaves no residue and does not damage the stairs. In addition, these stair mats can be used multiple times, you can remove them and replace them again. No tape needed, easy to install: You just need 5 minutes to install it. Clean the floor, remove the protective film from the steps, place them on the floors and press to fix them firmly. Do not use double-sided tape, glue, or the like. Easy to Clean & Perfect Size: It is recommended to use a vacuum cleaner to clean the stair treads to make them last a long time. They are also machine washable. The size of the stair treads is 8 x