The Oakley M2 Frame XL sunglasses provide you with all day comfort while maintaining durability with its lightweight, stress resistant O MATTER frame material. High Definition Optics provide optical clarity, visual fidelity, and impact resistance. The M2 Frame XL Plutonite lenses are also 100% UVA/UVB/UVC resistant and block harmful blue light up to 400nm. These sunglasses also offer an interchangeable lens system that allows you to change lenses in seconds and the Unobtainium earsocks and nosepad increase grip with perspiration for a no slip grip without compromising on style. Additionally, the XL version offers enhanced lens coverage and specialized lens curvature for protection against sun, wind and impact.