Jawbreaker™ is the ultimate sport design - answering the demands of world-class athletes with a 40 year heritage of uncompromising excellence. Oakley innovation has reached the pinnacle of performance by offering everything from surge ports for cooling airflow to Unobtainium® components for a comfortably secure fit, and with the hassle-free lens changing of Switchlock™ technology for vision optimization in any setting. Features: PRIZM™ is a revolutionary lens technology that fine-tunes vision for specific sports and environments. Extended field of view in the upper peripheral region to optimize for cycling Unobtanium® earsocks and nosepads keep glasses in place, increasing grip despite perspiration Switchlock™ interchangeable lens technology makes lens changing lenses fast and secure Patented High Definition Optics® (HDO®) provides superior optical clarity and razor-sharp vision at every angle INTEGRATED TECHNOLOGIES High Definition Optics® High Definition Optics® (HDO®) is a collection of patented technologies that allow Oakley eyewear to meet or exceed the testing standards of the American National Standards Institute for optical clarity, visual fidelity, and impact resistance. Switchlock™ To make the process of lens changing fast, easy and hassle-free, this technology uses a simple switch mechanism to release the mounted lens so a new one can be locked in instantly. It lets athletes adapt their vision and keep up with changing light. PRIZM™ Prizm™ is a revolution in lens optics built on decades of color science research. Prizm™ lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility.