Improved Non-Slip Loop: Our stylish glasses strap holder allows your glasses strap to be attached anywhere. The upgraded metal clip on this glasses strap allows you to securely attach your glasses to the ring. A Robust Necklace: The strap is 22 inches (57 centimeters) long. This glasses necklace provides strength and allows your glasses frame to hang seamlessly around your neck. Perfect for fishing, cycling, hiking, climbing, skiing, or just enjoying outdoor activities. It is also very suitable for daily indoor use. Premium Eco-Friendly Leather and Pure Cotton: This glasses strap is made of high-quality cotton and provides stylish functionality, unlike other glasses threads that can make you look very old. A necklace that is perfect for both men and women. Suitable for Most Glasses: From small to large eyeglass frames, these eyeglass chains and eyeglass cords fit both men and women and provide universal compatibility for optical eyeglass frames, presbyopic glasses, and sunglasses. Fasten your glasses around your neck and let your sunglasses hang comfortably on your chest or on top of your head. 4 Colors Including Simple Mathematical Matching: The set includes 4 colors of straps (beige, green)