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. 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 Protective soft vault included Flak 2.0 XL Sunglasses