1. Eyeglass strap size approx. 42 cm*2.5cmL*W. Fits small to standard sized eyeglass and sunglass templesa. Suit for adult or a child. 2. Neoprene fast drying material- Soft eyeglass strap made of lightweight neoprene, comfortable to touch and durable to use. 3. Lightweight strap would float on the water when swimming and be fast drying.see pictures Child,Sports 4. Wide application- You can apply eyeglasses straps on your eyewear when doing indoor or outdoor activities such as running, hiking, jogging, swimming and more. They can hold sunglasses well. 5. Anti-slip- Both ends of the straps can hold your eyeglasses tightly to prevent glasses fall off your nose.More colours in pack- 6 colors eyeglasses straps in one set. Enough to meet your daily sport need and will be a great choice as a gift to friends.