Features: Durable and tensile resistant Running, gym, cycling, walking Cords for sports glasses Material: Polyester Suitable for the audience: those who love sports and wear glasses for a long time 100% brand new and high quality. Specification: 30cm * 10cm Adjustable Perfect for all sports Product Name: sports glasses rope Description: The item is a pack of sunglass straps with rubber grips, which are suitable for regular glasses / prescription glasses. The straps are, so that sunglasses can be hung comfortably on the chest or rest on top of the head. The ends grip tightly on all small to medium frames, so even if you get lost in your favorite activity, your glasses will remain securely fastened to your head. A must-have for your sunglasses if you don't want any trouble when you have sports. Prevent your glasses from falling when you do sports. Also function as a great decoration for yourself or your friends. Simple and practical design and easy to use. Material: The glasses chain is made of comfortable nylon, durable and modern. Function: Safe and non, self-effectively avoid glasses slip, adjustable. Cotton Quantity: adjustable sunglasses strap. Design: Adjustable switch on the rope ensures that the belt does not fall off. Application: Fits most glasses frames, can work well with prescription glasses, sunglasses, reading glasses. There is 1-2% difference according to manual measurement. Package includes: 1 x glasses chain