Sport professionals demand nothing less than the best, and Oakley answered their challenge for decades. World-class athletes have driven us to create innovation after innovation, including interchangeable lens designs with unbeatable optical clarity. Flak Jacket takes that to the next level with the latest in performance technology. XLJ lenses extend coverage for larger faces and for those who prefer an expanded field of view. The Three-point fit is a patented innovation that ensures the frame makes contact only at the bridge of the nose and the sides of the head. It holds lenses in precise optical alignment with a secure fit that eliminates the pressure points common with frames that hook the ears. Plutonite Lenses are one of the most optically pure materials used in eyewear today, it maximizes clarity and impact resistance while filtering out 100% of all UVA, UVB, UVC and harmful blue light up to 400nm. Not a coating, the UV protection is from the lens material itself. O-Matter stress-resistant frame material withstands environmental extremes, it is lightwight yet highly durable. Controlled flexibility enhances impact resistance while contributing to the all-day comfort of frames.