UPGRADED RUBBER DOOR STOPPERS, LONGER SERVICE LIFE: Featuring a heavy-duty non-slip base, the door stopper remains stable when the door moves, distinguishing it from conventional doorstops. The unique wedge design, combining a hollow and structured interior, ensures durability and optimal stopping power. Constructed from high-quality, durable rubber, it is safe for families, pets, and children. ONE FITS MOST, FOR ALL FLOORS: These door stoppers are suitable for door gaps of various heights, measuring L 5.00" x W 1.50" x H 1.20". One door stop fits door gaps of 0.1-1.3''. Stacking 2, 3, or 4 wedges together allows application to door gaps ranging from 0.1'' to 5.2''. The upgraded door stop offers strong grip on carpet, concrete, cement, vinyl, tile, linoleum, and wood floors. Note: Suitable for most doors, but not for super heavy-duty doors. HOLD YOUR DOOR OPEN: Common issues include doors slamming shut due to slight breezes or being roughly closed by children or pets, which can cause damage to doors and walls and disrupt daily mood. This door stopper solves these problems by using the wedge to keep home or office doors open, facilitating air circulation without heavy door closure. EASY TO USE & EASY TO STORE: The door stop requires no drilling or screwing; simply place it at the bottom of the door. Installation is straightforward: position the wedge under the door, push the doorstop with your foot while pulling the door outward to secure the wedge in place. The doorstop includes adhesive holders for easy storage behind the door when not in use, reducing the risk of loss. The wedges allow for free movement without the need to repeatedly open and close the door.