Set content: You can get 8 pieces of glasses strap, 4 colors of fashion design, which can meet your personal style needs. Comfortable & Durable: Made from polyester high-elastic fabric, our glasses strap is both comfortable and durable, perfect for everyday use. Adjustable Size: Our eyeglasses strap is equipped with a rope slider, you can adjust it to a suitable size (rope extension range: about 24-43 cm), keep your eyeglasses securely in place, so you never have to worry about misplacing or dropping them. Eyewear Retainers: These Eyeglass Straps ideal for keeping your glasses from slipping off at work, and for keeping your expensive glasses safe during outdoor activities, travel, adventure, and sports. keep your glasses in place so you have time to do Function: These eyeglasses strap reduce eyewear slippage and prevent loosing glasses from face. Keep your glasses safe when you doing indoor or outdoor sports or activities.