Dor stopper wall protector is made of high-quality silica gel, which is environmentally friendly and durable. Wall protectors prevent wall damage and eliminate the sound of wall-to-door collisions. The healthy and soft silicone material ensures that the wall and door are normally opened or closed, creating a quiet and comfortable rest for you and your family. Package includes 4 Pieces Silicone wall protectors, can meets your different needs, you can stick it on the wall or under the foot of your chairs or furniture. Specifications: Quantity: 4 pieces Material: rubber; Color: white Door knob wall protectors size: the diameter is 4.1 inch, Tips: Please keep the wall clean and dry before using