Description: 【Good Quality Material】: Glasses Strap is made of good quality nylon material, which is elastic and will not wear out. The material is soft and comfortable. 【Adjustable Size】: The Eyeglass Strap is 21 cm long and can be extended to about 31 cm with the adjustable buckle. The front rubber tube is about 4cm long and can accommodate glasses legs up to about 2.6cm long. 【Fashionable and Convenient】: Eyeglass Strap is not only light weight and easy to carry, but also very practical and practical. It's the good accessory for your glasses. 【Wide Application】: Eyeglasses Strap Lanyard is universally suitable for outdoor, training, fitness and exercise, etc. It is suitable for motorcycle and bike riding glasses as well as most glasses. 【Keep Your Glasses Safe】:Glasses Retainer Strap can prevent glasses from being lost and broken during sports or sports such as cycling, hiking, skiing, etc., allowing your glasses to hang comfortably on your chest or rest on your head. Size Chart: 21cm/8.27inch~31cm/12.20inch Package Includes: 1 Glasses Strap(4 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.