Lightweight sports glasses with interchangeable lens. In addition to the pre-mounted lens, a clear extra lens is included. All lenses have UV400 protection and an adjustable nose bridge for the best fit. The lens is available in five variants and all lenses are made of durable polycarbonate. Comes with an extra clear Clear Vision Category 0 lens when you need protection for your eyes but don't need to reduce light transmission. The frame is made of 45% bioplastic. The glasses come with a semi-hard case with space for the extra lens and a polishing cloth.