Flak Jacket XLJ Transitions SOLFX Sunglasses - Sport professionals demand nothing less than the best, and we’ve 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 sunglasses take that to the next level with the latest in performance technology. Convenience gets a performance boost with Transitions SOLFX lenses. As sunlight brightens, the lenses darken to keep up. When sunlight is scarce, the lens color gets much lighter but never goes away — so you get enhanced depth perception in shaded areas and cloudy places. This unique edition of Flak Jacket comes with all the cutting-edge features that athletes demand. Stays Ahead of the Sun: Flak Jacket lets you change lenses in seconds to optimize vision in any sport environment. Multiple lens colors are available, and all lenses feature the unbeatable clarity of Oakley’s High Definition Optics (HDO ). Offers a Secure, Custom Fit: Choose the nose pads that give you the best fit — two sizes are included with every frame. Like the stem sleeves, they’re made of Unobtainium to increase grip with perspiration. Oakley’s Three-Point Fit optimizes comfort and holds the lenses in precise optical alignment for superior clarity. Optimizes Comfort, Protection and Clarity: Flak Jacket is made of lightweight O Matter for all-day comfort. Pure Plutonite lens material filters out 100% of all UV, and Flak Jacket meets ANSI Z87.1 standards for impact protection. The semi-rimless design means there’s no frame rim to block downward view. Optical clarity exceeds all ANSI Z87.1 standards, and XYZ Optics extends razor-sharp vision all the way to the lens periphery. Interchangeable lenses to optimize performance in any environment Durability and all-day comfort of lightweight, stress-resistant O Matter frame material Optimized peripheral vision and side protection of 8.75 base lens curvature Comfort and performance of Three-Point Fit that holds lenses in precise optical alignment Metal icon accents Optical precision and performance that meets all ANSI Z87.1 standards Impact resistance that meets all ANSI Z87.1 standards for high-mass and high-velocity impact UV protection of Plutonite lens that filters out 100% of UVA / UVB / UVC & harmful blue light up to 400 nm Glare reduction and tuned light transmission of Iridium lens coating Adapt to variable light conditions with Transitions SOLFX photochromic lenses Multiple interchangeable Unobtainium nose pad options for customizable and comfortable secure fit Protective sports-specific Oakley Soft Vault included with capacity for extra lenses Available with Oakley Prescription Lenses Transitions and the swirl are registered trademarks and SOLFX is a trademark of Transitions Optical, Inc. 2010 Transitions Optical, Inc. Also available in: Flak Jacket XLJ, Accessory Lenses, See All