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. Reduces glare and reveals details. Oakley's exclusive Prizmâ„¢ Lens Technology with the glare-free filtering benefits of Oakley HDPolarized. 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.