Authentic American style.Lasting Impact. American Optical earned its reputation for outstanding optics as a top supplier to the U.S. military. In 1958, they developed Flight Goggle 58 (now known as the Original Pilot Sunglass) to provide military pilots with maximum protection, optical performance & comfort. The rugged, sturdy structure and high quality finishing of the steel alloy frame coupled with distortion free, toughened and polished. For correct sizing view and print a life-size PDF click here Includes: Protective carrying case Manufacturer's warranty Eye Size: 52mm, 55mm, 57mm Frame Colour: Black Lens Colour: Grey or Blue Mirror Temple: Bayonet All non-polarized for aviation Lens Options: True-Color™ Gray Glass SkyMaster™ Glass lenses offer superior clarity and scratch resistance.Chromatically tuned True-Color™ Gray tint reduces eye fatigue in bright light conditions. Lens Filter Category: 3 SunFlash Blue Mirror Glass SkyMaster™ Glass lenses offer superior clarity and scratch resistance.Flash mirror lenses reflect more light than standard tints for comfortable all-day wear. Built on AO’s Cosmetan™ Brown lens, get the contrast enhancement of brown tint with the calming effect of a blue lens. Lens Filter Category: 3 All lenses include: 100% UVA/UVB protection Anti-reflective backside coating Oleophobic smudge-resistant coating Impact-resistant (ANSI Z80.3) Scratch-resistant material and hardcoat Distortion-free for optical clarity Worry Free Trial: 30 days return for store credit or exchange if you are unhappy with your style or colour pick. Sunglasses for Pilots: Pilots should consult their employer or Flight School for lens recommendations. Often polarized lenses are not recommended as they can interfere with LCD control panels and polarized windsheilds. Cool Facts: The Original Pilot (originally named the FG-58) was issued to Gemini and Apollo astronauts as part of their survival kits. The standard issue specs were 52mm gold frames with Calobar green glass lenses and bayonet temples. Other Styles American Optical Original Pilot - Gold From $350.00 American Optical Original Pilot - Matte Silver $350.00