JawbreakerBlack Iridium Lens: Extremely bright light. Excellent all-purpose lens for sunny conditions. Offers truer color perception. Features an Iridium coating to reduce glare. We extended the field of view in the upper peripheral region to optimize it for cycling and once we added Switchlock Technology for easy lens changing plus temples that adjust to three different lengths for helmet compatibility Jawbreaker became the ultimate sport design. This lightweight yet durable performance sunglass features impact resistance and optical precision at the level of ANSI Z87.1 and with the Polaric Ellipsoid geometry of High Definition Optics you ll have razor-sharp vision at every angle of view. Jawbreaker answers the wish list of world-class athletes 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 it lets them adapt in seconds with HDPolarized optics and lenses with Prizm technology that fine tunes colors for maximized contrast and enhanced vision. INTEGRATED TECHNOLOGIESSwitchlock 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. Impact ProtectionBacked by decades of innovation Oakley performance eyewear offers uncompromising protection against high-velocity and high-mass impact. The protection is a benefit of the premium materials and unique architectures of Oakley lens/frame combinations. 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. Unobtainium A soft hydrophilic synthetic it increases adhesion when wet to grip better when you perspire. This makes it ideal for earsocks and nose pads in performance eyewear. Iridium Designed to balance light transmission and reduce glare this premium lens coating is made with superheated metal oxides. It is available in a spectrum of colors for optimizing vision in virtually any light condition.