The XL edition offers a standard size frame with enhanced lens coverage, and every millimeter of the peripheral view is optimized with High Definition Opticsâ„¢. This durable yet lightweight design takes performance to the next level and brings style along for the ride. These Oakley OO9188 Flak 2.0 XL sunglasses feature a squared O-matter frame in gray with gray lenses, offering a modern look. They are recommended for round and oval faces, as they add definition and structure to the features.