Oakley RadarLock SunglassesThe ultimate sport performance product, 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. Switchlock lets you adapt your vision for any environment and keep up with changing light, and all lenses are optimized with the unrivaled clarity and 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.Plutonite lenses maximize clarity and impact resistance while filtering out 100% of all UVA, UVB, UVC and harmful blue light up to 400nm. Not a coating.High Definition Optics allow Oakley eyewear to meet or exceed the testing standards of the American National Standards Institute for optical clarity, visual fidelity, and impact resistance.Impact protection against high-velocity and high-mass impact.Patented Three-Point Fit that ensures the frame makes contact only at the bridge of teh nose and the sides of the head and eliminates the pressure points common with frames that hook the ears. O-Matter frame that withstands environmental extremes. Controlled flexibility enhances impact resistance while contributing to all-day comfort.Iridium lens coating balances light transmission and reduces glare.Switchlock technology useses a simple switch mechanism to release the mounted lens so a new one can be locked in fast, easy, and hassle-free.