Premium case made from EVA (synthetic rubber-like material) fits most glass sizes. Features waterproof durable crush-resistant anti-shock design which prevents cracked frames and lenses. It has a zip closure and a carabiner-style key chain clip. Suitable for outdoor activities such as swimming hiking biking or skiing or even your daily commute! One size fits most from small children's glasses to adult frames you can also use it as a purse a wallet or as a cosmetic makeup bag for carrying money cards keys travel accessories or pens and pencils.