Oakley Flak 2.0 XL Sunglasses The XL edition offers a standard size frame with enhanced lens coverage, and every millimeter of the peripheral view is optimized with High Definition Optics® in a durable yet lightweight design that takes performance to the next level and brings style along for the ride. IMPACT PROTECTION Oakley lenses are designed and tested under extreme high mass and high-velocity circumstances to ensure uncompromising protection across a wide range of demanding conditions. PRIZM LENSES Oakley's exclusive lens technology designed to enhance color and contrast so you can see more detail. Additional Features: Lightweight O Matter frame material with ellipse metal icon accents Unobtainium earsocks and nosepads for increased comfort and performance 8.75 base lens geometry with HDO Available with Prizm lenses to enhance color, contrast and detail for an optimized experience Polarized and Iridium lens options available Protective soft vault included