Perfect for Kids: Kids eyeglass strap length is 8.46 inches, highly elastic and can be stretched up to 15.7 inches, suitable for eyeglass frame widths between 8 - 16 mm. Ideal for children and toddlers, also suitable for adults. If your glasses have thick arms, simply thread them through the strap. The strap is flexible; if tight, stretch it before use. Anti-Slip: Ergonomically designed, these glasses straps are easy to wear and comfortable for all-day use. Helps keep glasses securely in place, preventing slipping or falling. Soft Silicone Material: Made from high-quality silicone, these bands are highly elastic, flexible, durable, adjustable, and comfortable to wear. Skin-safe material that is resistant to breaking, ideal for daily use and physical activities. Assorted Colors: Available in 10 vibrant colors: red, orange, yellow, blue, brown, purple, pink, black, white, and dark blue. Colorful options make it fun for kids to wear glasses and allow for style coordination with outfits. Widely Used: Suitable for anyone who frequently adjusts their glasses. Great for indoor and outdoor activities such as running, basketball, football, cycling, skiing, and other sports.