Foldable glasses! The Carrera Egg Change/N Glasses come with a frame made of Grilamid, nosepieces and temple tips are covered with water-repellent Megol. With interchangeable lenses. The sports glasses collection of Carrera is a combination of style, technology and security that offers the highest achievement at every level. They guarantee perfect view and steady protection of the eyes. The perfect choice for every sportsman! Frame: Grilamid - a superior nylon plastic base. It is rugged, highly resilient, flexible and shape-retaining. lenses: The lenses have a special Anti-Fog coating, hardened silicone varnish makes the glasses extremely to push and scratch-resistant. The Silver Flash lens with 32% light transmission is ideal for medium to bright light. An additionalOrange Antifog lens with 60% light transmission for very flat light.