The Original Pilot has been a favorite of U.S. military pilots since 1958 and continues to be AO’s most popular style. Expect uncompromising quality - engineered to rigid military specifications. Bayonet temple style with clear acetate temple tips, offering a sleek and vintage look not readily available on the market that allow you to take frames on and off without removing a helmet. Click-in nosepad arms engineered for stronger soldering and less chance of breakage. Designed to incorporate a vintage AO mark of authenticity. High quality PVC nosepads are supplied by German manufacturer, Frey Winkler. A click-in style allows for easy replacement. In our state-of-the-art American headquarters and factory, passionate AO craftsmen are at the heart of delivering you quality, timeless eyewear that defines True Original style, using only the finest global materials. AO Lifetime Warranty: We believe things should be built to last. AO Eyewear offers a lifetime warranty on all solder points that fail due to manufacturer’s defects. Since 1833, American Optical has stood as a symbol of American ingenuity. Our pride in AO's heritage is matched only by our pride in our team's commitment to quality craftsmanship and customer service.