The Oakley SI Flack Jacket 2.0 XL sunglases offer a standard size frame with extra lens coverage, allowing more of the peripheral view to be optimized with High Definition Optics. This is delivered in a durable and lightweight design that can increase performance while showing off your style. The Oakley SI Flack Jacket 2.0 XL sunglasesses protects your eyes against sun, wind, and impact, and the patented optics maintain clarity of vision along the full curvature of the lens to ensure you can spot your mark without obscurity.