Specification: Brand new Color: Black/Transparent/Brown/Gray (optional) Material: High quality silicone Feature: Fine workmanship,high quality silicone anti-slip holder for the eyeglasses, ear hook. Soft and light, comfortable and safe. Secure your glasses and sunglasses during use . Easy to install and use, suitable for sports & activities,effectively stops eyeglass slipping. Be used to make your glasses a better fit and stop them slipping down to your nose. Package included: 2pair/set Silicone glasses ear hooks (anti slip) Note: Please allow a little size errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same