The lenses feature Heat Wave Anti Fog Tech with a dual surface lens coating that prevents condensation from forming, ensuring your vision stays crystalline and your glasses stay on. The Rayth is a welcome addition to the performance line. They feature an ultra-bold shape with sharp lines and a premium fit. The Rayth is a standard-width frame, made compact top to bottom and uses a flat profile lens which results in a sledgehammer tough look. The details on the Rayth are second to none and it is sure to become your new go-to power adder when it comes to eyewear. Other Rayth features include a modified arm with rubber inserts to prevent wear and hair snags. Furthermore, the Rayth features increased surface area in the rubber nose for more grip on the face. Standard Performance line features include 2mm thick lenses that meet ANSI Z.87 mass impact requirements plus a specific arm, with beveled emblems with Rubberized Hytrel® inserts in the arms and nose. The Quick-Latch side-shield system provides lateral protection from debris and unwanted side light meeting ANSI Z87+ standards with side shields installed. Standard Performance line features include 2mm thick lenses that meet ANSI Z.87 mass impact requirements plus a specific arm, with beveled emblems with Rubberized Hytrel® inserts in the arms and nose. The Quick-Latch side-shield system provides lateral protection from debris and unwanted side light meeting ANSI Z87+ standards with side shields installed.*Anti-fog coating is applied to lens only Lens Technology: 2mm thick Polycarbonate lens meets or exceeds mass impact requirements for Z87 standards, injection molded to the highest standards and tested to ensure optimal clarity, along with color and light transmission standards. Heat Wave ANTI-FOG glasses feature anti-fog treatments on both sides and are 100% guaranteed to remain fog free. Due to the nature of anti fog lens coatings, extra care should be taken to ensure that glasses are cleaned properly and free from debris. Only use provided microfiber to clean lenses. Lenses are U6:L3 UV400 - 100% UVA / UVB blocking Firestorm Lens VLT = 14% / Cat 3Firestorm Polarized Lens VLT = 12% / Cat 3