The Oakley Flak 2.0 XL provides users with a standard size frame and enhanced lens coverage. Every millimeter of the peripheral view is optimized with High Definition Optics or Prizm technology to create a platform that takes performance to the next level and brings style along for the ride. Features: Lightweight O Matter(TM) frame material with ellipse metal icon accents Unobtainium(TM) earsocks and nosepads for increased comfort and performance 8.75 base lens geometry with HDO(TM) Available with Prizm(TM) lenses to enhance color, contrast and detail for an optimized experience Compatible with Oakley Authentic Prescription Lenses Specifications: Style: Active Frame Color: Steel Lens Color: Clear/Black Iridium Photochromic Fit: Standard Interchangeable Lenses: Yes Extra Lens(es) Included: - Polarized: -