It took three decades to achieve next to nothing. That's the only way to describe the weight of the Oakley Nanowire™ a titanium alloy frame that practically feels buoyant in air. But the real breakthrough is the adaptable fit a benefit of memory metal that allows Oakley to create true sculptural contours that stay comfortably flexible. With a rimless design it's probably the lightest sunglass you’ll ever wear even though it carries a ton of optical innovation.The unbeatable clarity of High Definition Optics® (HDO®) has been matched with the finest technologies ever to tame light rays. The Oakley Nanowire™ blocks glare with 99% polarization efficiency thanks to the best polarized lenses on the planet. Oakley's permanent Hydrophobic™ lens coating repels water skin oils and dust. Iridium® lens coating balances light to optimize vision and the lenses even have anti-reflective coating on the back side. XYZ Optics® maximizes clarity at all angles of view and our Plutonite® lenses filter out all UV. If you need prescription lenses this frame can go that route.