1. PREMIUM QUALITY RUBBER: Your new Door Stops are made of REACH certified odorless rubber. They have been rigorously tested and approved by SGS to prove they are safe to use. 2. BEST VALUE PACK: Your set comes with three free holder hooks to hang the product on any door and keep them safe and organized. Its colorful gift package makes it an original and thoughtful gift. 3. WEDGES DOORS LIKE NO OTHER: Our unique sloped design and anti-slip base provide ultimate gripping power and allow your door stoppers to work on EVERY FLOOR surface. Furthermore, they can hold even the heaviest doors.