Good rubber / lilicone: Door wedge rubber and silicone are quite flexible and flexible. This material will not scratch any type of doors and sensitive surfaces.The combination of the unique sloping structure and the non-slip base generates maximum grip power, which allows to safely secure the heaviest doors on any floor surface.4 rubber plugs with free hook to hang the product on any door and keep it safe and organized.No more scratches on your floors. It is used to secure open doors at home or anywhere else. Keep you and your family, children, babies and pets safe from closed doors.Made of REACH certified odorless rubber. They have been rigorously tested and approved by SGS to be used in homes and offices that have children or pets.Product Description:YOMYM 4 pieces High Quality TPR Black and Gray Color Door Stoppers Decorative Door Stopper Includes Hook Description: The door stops are made of high quality soft silicone, designed with underside surfaces with notches that allow you to hold the doors firmly in place, prevent the door from slamming, sliding or sliding. Get a good grip for tiles, carpets, laminate flooring, wooden door, metal door, glass door, self-closing door, heavy doors, home doors, standard doors, large doors and commercial doors. Made of silicone approved by the FDA to ensure the health of your family. The softer rubber guarantees that neither your floors nor your doors are damaged by the use of the soft material of previous TPR. Specifications: Metarial: TPR Dimension: 13x 3x 2.7cm Weight: 140g Color: Black and Gray Package content: 4x Security door stopper