Felt gliders do not fall off: unlike furniture pads that are glued or nailed, the Safiman chair pad combines felt and silicone with special technology that ensures it stays firmly in place on the bottom of the leg guard. It won't peel off or leave any glue or scratches on your floor. Common sizes: suitable for chair legs whose diameter is between 30 mm and 45 mm. EASY TO INSTALL - It is simple and easy to attach the leg protector to the leg of the chair without any tools. The stretchy silicone material is very flexible, so you can adapt the leg protector to a variety of chair legs of different shapes and it will fit perfectly. Reduces noise and prevents shocks: it protects furniture legs, wooden floors and tiles, reduces noise and prevents bumps. The felt cushion on the bottom reduces resistance and allows furniture to move easily and smoothly without having to lift your head. Suitable for different shapes: can be used for round and square chair legs of different shapes, such as restaurant chairs, patio chairs, kitchen chairs, metal bistro chairs, etc.