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®. Key Features of Oakley Flak 2.0 XL Sunglasses: 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. Includes: Microbag, Sport Soft Vault Case, and Nosepad. Frame Fit: Standard Fit. Lens Width: 59 mm. Bridge Width: 12 mm. Lens Height: 38 mm. Temple Arm Length: 133 mm.