Experience lasting comfort and clearer vision with Breakline Optics. Cast molded Duraclear Trivex polarized lenses come with anti-reflective coatings.They are also lightweight and stronger than polycarbonate, with the clarity of glass or mineral lenses. With an impact rating of z87.1, they are built to last. These lenses are designed to provide clear, strain-free vision that is comfortable on your eyes and good for all-day wear. In addition, our The Duralite Grilamid TR-90 frame is highly resistant to UV rays, heat, chemicals, and stress cracking, providing you with a durable and reliable option for high-impact activities.