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-Prizm lenses enhance color, contrast and detail for an optimized experience-Protective soft vault included