[4PCS Adjustable Eyeglass Strap]: Black eyewear retainer about 6.69~13.78"(170~350mm) long, 0.098"/2.5mm wide, 4 pieces.[Easy to Wear]: After putting on the glasses, insert one of the temple legs into the silicone sleeve, and then finish the other side. Reusable, hand washable, multiple use-use with your glasses every day.[Shatter Resistant Design]: Glasses strap holder with buckle silicone findings. When you need a break, you can hang the back of your head glasses strap around your neck without worrying about it coming off.[with 2 Pieces Cloth]: Eyeglasses head band holder straps with 2 pieces yellow suede fiber glasses cleaning cloth, about 3.14x3.14"/80x80mm, convenient cleaning glasses.[Wide Application]: Eyeglasses strap holder is suitable for everyone and the flexible adjustable eyeglass holder can be used for all types of eyewear such as sunglasses, swimming goggles, sports glasses and even for use during sports.