【15° Tilt Chair Solution】 Specially designed for sloped chair legs (up to 15° tilt) - The ergonomic silicone shell with 360° flexible ribs creates secure grip on angled legs, preventing protector slippage that damages floors. 【3-Layer Protection System】 ① Top silicone shock absorber ② Middle TPU stabilizer ③ Bottom 5mm felt pad - Triple-layer construction absorbs 92% impact force ，maintains chair stability on uneven surfaces. 【Silent Glide Technology】 Upgraded felt surface reduces 80% sliding noise ，perfect for night use in bedrooms/home offices. Machine-washable pads retain noise reduction after washes. 【Multiple size and shape options】 Black Chair Leg Caps are elastic and can better adapt and fit the chair legs. We have three sizes (suitable chair leg diameter/side length: 0.63''-0.79''16-20mm ,0.83''-1.02''21-26mm ,1.10''-1.30''28-33mm) two shapes (round and square) are available. Warm reminder: Please carefully measure the diameter of the chair legs before ordering. 【3-Minute Floor Saver】 No tools needed: ① Clean legs ② Twist-on caps ③ Lock with half-rotation. the other side of the protector to complete the installation.