In a sport where performance is everything, turn to the Oakley Flak Jacket™ Sunglasses to ensure your eyes are protected. It boasts numerous innovations and superior technologies that athletes everywhere depend on. The Hydrophobic™ lens coating prevents water from leaving streaks and sheen that can compromise vision. Whether it’s rain, sweat or splashing runoff, water can’t get a foothold. Skin oils, fingerprints and lotions are easily wiped away without leaving a residue, eliminating the haze that makes ordinary lenses a nightmare to keep clean. High Definition Optics® ensures your eyes have an accurate, crystal-clear view of the course. The Transitions® lenses are fully interchangeable, and when the sun fades or flares, your shades can adjust automatically. Nosepiece components in two different sizes allows you to choose the perfect fit, and the lightweight frame stays securely in place with Oakley Unobtainium®, a synthetic that increases grip with perspiration. Unlike ordinary frames that hook over the ears, Flak Jacket™ offers the comfort of a Three-Point Fit with balanced pressure points. The O Matter® frame material is engineered to withstand the abuse of athletics, and is one of the reasons why Flak Jacket™ meets all ANSI Z87.1 standards for high-velocity impact protection.