This is a smaller version of the Ztek for some women. These lightweight and stylish Ztek safety glasses offer excellent protection for the active worker. Superior comfort and fit. Lenses are coated for scratch resistance. Features a clear frame and I/O mirror lens. They are made of an impact resistant polycarbonate. Features a durable frame, which stands up to abuse and soft arm tips for extra comfort. They're great for the outdoor activities, like biking or cycling. They're so cool, nobody will even know that you're wearing safety glasses. Exceeds ANSI Z87.1-2003 High Impact Requirements, CSA standard CAN/CSA Z94.3. Provides 99.9% protection from harmful UV-A and UV-B rays. Measures 135mm wide, 40mm tall, and 136mm long.