Crews Law Over the Glasses Safety Glasses, Clear Anti-Fog LensBreaks through the traditional look of over-the-glasses protective eyewear. Durable polycarbonate frame designed to be worn over prescription glasses. Ratcheting temple design for optimum fit. Nonslip temple inserts provide comfort and grip. Anti-fog, scratch-resistant and filters 99.9% of UV rays. Style: Over-the-Glass; Frame Color: Gray; Frame Material: Polycarbonate; Lens Material: Polycarbonate.