Eyeglass strap size approx. 42 cm*2.1cmL*W. Fits small to standard sized eyeglass and sunglass templesa. Suit for adult or a child.Neoprene fast drying material- Soft eyeglass strap made of lightweight neoprene, comfortable to touch and durable to use. Lightweight strap would float on the water when swimming and be fast drying.see picturesChild,SportsWide 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.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.