Oakley engineering takes performance to the next level and brings style along for the ride. Flak 2.0 offers a standard size frame with enhanced lens coverage, and every millimeter of the lens is optimized with High Definition Optics® in a ruggedly durable yet lightweight design. Designed to push your limits with patented XYZ Optics® for razor sharp clarity and secure grip of Unobtanium®
-The XL edition offers enhanced lens coverage and specialized lens curvature for protection against sun, wind and impact
-Unobtanium® earsocks and nosepads keep glasses in place, increasing grip despite perspiration
-Patented High Definition Optics® (HDO®) provides superior optical clarity and razor-sharp vision at every angle
-O-Matter™ stress-resistant frame material is both lightweight and durable for all-day comfort and protection
-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.