Durable, high-velocity, military-grade impact protection grey lenses, ideal for indoor and outdoor use. Also features anti-scratch, long-lasting anti-fog lenses to withstand the demands of the jobsite. Comfortable and flexible arms for extended wear. Grey lens is suitable for indoor and outdoor use. Polycarbonate Construction Double-Sided Anti-Scratch Lens Grade F Impact Lens Optical Class: 1 100% UV Protection Anti-Fog Impact Protection F Comfortable & Flexible Arms Polycarbonate Construction Double-Sided Anti-Scratch Lens Grade F Impact Lens Optical Class: 1 100% UV Protection Anti-Fog Impact Protection F Comfortable & Flexible Arms