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 Lens Size: 52mm, 55mm, 57mm Frame Colour: Matte Silver Lens Colour: Green Temple: Bayonet All non-polarized for aviation SkyMaster™ Calobar™ Green Glass Lens SkyMaster™ Glass lenses offer superior clarity and scratch resistance. Chromatically tuned True-Tone™ Green tint provides true color perception for natural vision. Lens Filter Category: 3 100% 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 - Black From $350.00