Package included: 5 PCS eyewear retainers in total. The set 5 pieces are all black, perfect accessories for participating in summer activities.Durable Material: Made of soft 95% nylon + 5 cotton%, 13.7 inches long, the glasses strap is of good skid resistance and sweat absorption, can fix your eyeglasses well. Meanwhile, the eyeglass strap are light weight, easy and comfortable to wear. The band is made of flexible hypoallergenic material.Durable NylonComfortable and adjustable: Safe and non, selfeffectively avoid glasses slip. Adjustable toggle on cords ensures that straps will not easily fall off and are comfortable for all head sizes and shapes.Fits most eyeglasses: These eyeglass cord holders are suitable for nearsighted glasses, reading glasses, sunglasses, etc. The intense indoor and outdoor activities that you didn't dare to do before, you will enjoy the joy of walking, running, climbing, skiing and other sports even more after having eyeglass strap. No afraid that the sunglass will drop down.Great Service: If you have any questions about our products, please feel free to contact us. We will serve you online 24 hours a day. Your smile is our greatest feedback.