Description: - Universal fit silicone glasses straps for kids/adults to securely keep your glasses on - High elastic, adjustable and snug fit design makes it not easily fall off but comfortable for all head sizes and shapes - Keep your glasses around your neck while not using and never worried losing or sliding off while moving - Ultra-light, comfortable, long lasting, anti-corrosion and fashionable. - Great for sports, outdoor activities such as fishing, biking, hiking, skiing, watersports or for everyday useSpecification: - Material: Silicone - Color: Black - Size: - Kids Strap Length: 18-25cm/ 7.1-9.8 inch - Adults Strap Length: 20-30cm/7.9- 11.8 inch - Lengthened Length: 23-35cm/ 9.1-13.7 inchPackage Includes:1 Piece Galsses StrapNote:Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!