World-class athletes have driven Oakley to create innovation after innovation, and FLAK JACKET takes that to the next level with the latest in performance technology. Featuring Oakley HYDROPHOBIC, a permanent lens coating, lightweight O MATTER for all-day comfort, and pure PLUTONITE lens material which filters out 100% of all UV rays. Change lenses in seconds to one of the multiple High Definition Optics lens colors that are available.