[NON-TOXIC CERTIFIED MATERIALS SAFE FOR CHILDREN AND PETS] Certification makes this a perfect rubber door stopper for homes or offices that accommodate children or pets. No need to worry about harmful odors or toxic chemicals. [NEVER LOSE THE DOOR STOP AGAIN WITH THE INCLUDED HOLDER] Each rubber door stopper comes with a handy holder. Simply stick the holder to any door or on the wall, it will keep the door stopper ready to use whenever you need it. [SUITABLE FOR ALL DOORS AND FLOORS] Use the door stopper with confidence - rubber door to prevent it from slamming at the slightest draft, whatever the surface. The Doorstop will effectively keep any door open on linoleum, tile, stone, wood, carpet, cement, asphalt and more. It is also possible to double the height by stacking the door stopper in case of higher thresholds. [USE ANYWHERE] It is suitable for all doors and all floors. It has good adhesion on tiles, carpet, laminate, wooden, metal, glass doors, self-closing doors, heavy doors. Note: The data are all measured manually. Please allow an error of 1-76cm. Due to the difference between the light and the display, there will be a certain color difference, which is subject to the actual object received.