Eyewear Strap for Universal Sports Sunglasses Retainer, Unisex Sunglass Strap Safety Glasses Holder 2 styles Ear Grip HooksSilicone Imported Adjustable closure Hand Wash Soft silicone material [ FEATURES ] eyeglass strap length is 8.46in, as high elastic it can be stretched up to 15.7in, suitable for the eyeglasses leg frame width 8 - 16 mm, almost all frames of eyeglasses, reading glasses, sunglasses. Perfect for kids or toddlers, but also suitable for adults. If your glasses have thick leg, please pull it through the strap. The strap is flexible, if feel tight please stretch it first. [ Anti-Slip ] With ergonomic design, the eye glasses string straps are easy to wear. The eyeglasses strap holder can be used together or alone, keep your glasses in place, no slipping or breaking any more. For kids who are new to wear glasses, the glasses strap will do great help to stop the glasses from slipping. [ Soft Silicone Material] Our child glasses bands and ear grip hooks are all made of silicone material, high elastic, flexible and durable, adjustable and comfortable for all day wear, safe to skin, hard to break, perfect for daily wear and exercise wear. [ Widely Used] No matter you are a child, an adult, a student, a staff or a retired senior person, as long as you need wearing glasses, when you are doing sports, studying, working, reading newspapers, etc. This ear cushion can prevent glasses from slipping off your nose, it can make you more efficient. [ Note] Applicable eyeglasses legs' tail width is 0.8 - 1.5 cm/0.32 - 0.6 in, suitable for most children's glasses legs except thin metal glasses legs. [ Whats in the package ] 4 Pcs Eyeglasses Sunglasses String Straps (Black);4 Pairs Black Round Shaped Glasses Ear Hooks;4 Pairs Black Ear Shaped Glasses Ear Hooks;Free Gifts:1PCS glasses cloth (Random color)