OO Red Iridium Polarized Light Transmission: 18% Conditions: Enhanced Contrast Protection Index:2 Neutral / Contrast: Contrast Clear Very low light or indoor use only. Allows the maximum amount of light through while still filtering out 100% of all harmful uv. The ultimate sport performance product this revolutionary eyewear lets athletes take full advantage of Oakley&8217;s wide array of performance lenses thanks to an ingenious invention called Switchlock™ Technology that makes lens changing fast & hassle-free. Switchlock lets you adapt your vision for any environment & keep up with changing light & all lenses are optimized with the unrivaled clarity & impact resistance of High Definition Optics (HDO). Engineered to meet the uncompromising demands of world-class athletes Radarlock™ changes the game with a new definition of performance. Whether you&8217;re competing for Gold or just squeezing every ounce of possibility out of those prized moments of athletic escape you&8217;re either wearing Radarlock™ or wishing you were. If you haven&8217;t heard about Oakley Switchlock Technology you&8217;re wasting too much time fumbling with the outdated designs of ordinary interchangeable lens systems. Our simple switch mechanism makes the process quick & easy & the lens is held securely in place without uneven pressures that can bend it & distort your vision. Somebody finally got it right & did so with a vengeance against conventional technology.HDO sets the standard for optical clarity visual fidelity & impact resistance & Radarlock is racked & revved with all those benefits including Polaric Ellipsoid™ geometry to extend clarity across the entire lens. The sweeping contour gives you a wide-open view with maximized peripheral vision & enhanced side protection against sun wind & impact. You&8217;ll have optical performance rated at ANSI Z87.1 & that same uncompromising level of standards applies to protection against high velocity & high mass impact. For even more protection our Plutonite lens material filters out every eye-searing ray of UV. The lightweight yet insanely durable frame is made from O Matter™ & shaped with surge ports to maintain a cooling flow of air. Interchangeable nose pads let you achieve a comfortable customizable fit & the earsocks are made from the same sport-optimized Unobtainium to increase grip when you sweat. You won&8217;t feel any uneven pressure points with this frame because its Three-Point Fit doesn&8217;t hook your ears &8212; it just holds the frame comfortably in place while keeping the lens in precise optical alignment. Radarlock comes in an Oakley Soft Vault case that lets you store an extra lens & each frame comes with two lenses: one for bright days & one for low-light conditions. Choose Oakley HDPolarized technology & enjoy the glare-killing clarity of the best polarized lenses on the planet. Balance light transmission & tune your vision with Iridium lens coatings & take advantage of Oakley Photochromic technology for optics that darken automatically in response to sunlight. Oakley authentic Prescription Lens Inserts are available for Radarlock Path & Pitch. Frame: Oakley Switchlock™ interchangeable lens technology for fast & easy lens changing Durability & all-day comfort of lightweight stress-resistant O Matter frame material Integrated surge ports to channel airflow for the comfort of cooling Unobtainium earsocks that increase grip when you sweat Comfort & performance of Three-Point Fit that holds the lens in precise optical alignment Multiple interchangeable Unobtainium nose pad options for secure customizable fit that maximizes comfort Metal icon accents Lenses: High Definition Optics for clarity visual fidelity & impact resistance that meets all ANSI Z87.1 standards Polaric Ellipsoid lens geometry to extend clarity to the edge of a wide peripheral view Lens curvature that improves side protection against sun wind & impact Polarized Options&8211; Minimized glare via technology that produces the best polarized lenses on the planet UV protection of Plutonite lens material that filters out 100% of UVA / UVB / UVC & harmful blue light up to 400nm Oakley Photochromic lens options: The lens darkens & lightens in response to changing light conditions Iridium coated lenses that reduce glare & balance light transmission Vented or non-vented lens configurations Two lens shapes to choose from