Material: Silicone. Soft ,stretch and super lightweight, comfortable to wear and easy to install/repair. Anti-slip design: Prevent your glasses from slipping, great for working,daily wear or outdoor activities. Size：65x7mm (L x W); Hole inner diameter approx.:1mm.suitable for glasses legs ranging from 1mm to 1.5 1mm diameter Round spectacles Quantity: Package includes 5 pairs of Anti-slip Eyeglass End Tips in , meet daily needs Kind tips：please carefully study whether your glasses legs frame conforms to the specifications that this product can match before placing an order. Oversized glasses legs may not be suitable