Product 100% brand new and high quality 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.Fine workmanship,high quality silicone anti-slip holder for the eyeglasses, ear hook.Be used to make your glasses a better fit and stop them slipping down to your nose.Material : SiliconeSize: 33MM*11MM (suitable for 4- 12MM temples)Package included:1/10/20Pcs Silicone glasses ear hooks (anti slip) NotePlease allow 2-3 cm difference due to manual measurement. Besides different computers display colors differently, the color of the actual item may vary slightly from the below images, thanks for your understanding(1 inch = 2.54 cm)