The aggressive Kazbek has a traditional rectangle frame that features jagged temple arms. Its flexible and durable matte black frame with a red "E" on each temple is equipped with soft thermoplastic rubber nose pads and Edge-Flex temple arms to create a comfortable, nonslip fit. This safety-rated eyewear has a rugged style and offers fashion and function in any situation. Polarized Smoke lenses provide the perfect all-around tint for bright light conditions. Vapor Shield "military grade" anti-fog technology keeps these lenses completely resistant to fog, even in extreme environments. This popular lens color blocks sunrays without causing color distortion. The addition of a polarizing filter increases clarity by reducing glare. 14% of visible light passes through this lens color. Edge Eyewear glasses are tested in independent laboratories to ensure their compliance with ANSI Z87.1+2015 and Military Ballistic MCEPS GL-PD 10-12 standards. All Edge lenses block 99.9% of UVA, UVB, and UVC radiation and are coated to reduce scratching.