High quality material Door stop made of PVC, a non-toxic material that combines the strength of plastic with the flexibility of rubber. This design helps it fit around the door handle securely and provides an effective shock absorbing effect. Easy to install No drilling or screws required. These door knob bumpers mount to door and window handles in seconds. Suitable for indoor or outdoor use thanks to good weather resistance. No tools needed—just place on the handle and you’re done. Door noise stopper and wall protection Protects walls and frames by preventing the door knob from hitting the wall. Eliminates popping noise and reduces the risk of scratches or damage to surfaces. Invisible compatible size Outer dimensions are 3 x 2.2 x 1.2 cm, with an inner diameter of about 1.6–1.7 cm. It can stretch to fit slightly larger handles. Transparent design blends with most decor, remaining discreet. Use scenarios - In homes or apartments, install on bedroom or hallway doors to prevent wall scuffs and reduce door noise in tight spaces. - In offices or classrooms, attach to doors near desks or partitions to protect walls and minimize disturbance. - On outdoor or entry doors where weather exposure is a factor, use for additional protection of walls and door frames while requiring no tools or alterations.