Radarlock changes the game with a new definition of performance. This revolutionary eyewear lets athletes take full advantage of Oakley's wide array of performance lenses, thanks to an ingenious invention called Switchlock™ Technology that makes lens changing fast and hassle-free. All lenses are optimized with the unrivaled clarity and impact resistance of High Definition Optics (HDO ). The simple switch mechanism makes the process quick and easy, and the lens is held securely in place without uneven pressures that can bend it and distort your vision. HDO sets the standard for optical clarity, visual fidelity, and impact resistance, and Radarlock is racked and 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 and enhanced side protection against sun, wind and impact. You'll have optical performance rated at ANSI Z87.1, and that same uncompromising level of standards applies to protection against high velocity and high mass impact. For even more protection, Plutonite lens material filters out every eye-searing ray of UV. The lightweight yet insanely durable frame is made of O Matter and shaped with surge ports to maintain a cooling flow of air. Interchangeable nose pads let you achieve a comfortable, customizable fit, and the earsocks are made of the same sport-optimized Unobtainium to increase grip when you sweat. You won't feel any uneven pressure points with this frame because its Three-Point Fit dsn't hook your ears. Radarlock comes in an Oakley Soft Vault case that lets you store an extra lens, and each frame comes with two lenses: one for bright days and one for low-light conditions.