The Oakley Flak(R) 2.0 XL Sunglasses will take your performance and style to the next level. These versatile shades are engineered with enhanced lens coverage and is optimized with High Definition Optics(R) in a durable yet lightweight design. They were built to push your limits with innovative PRIZM(TM) lenses that deliver superior vision and a secure grip of Unobtanium(R) to keep your glasses in place while you tear it up. Fit & Design: Sport performance sunglasses PRIZM(TM) is a revolutionary lens technology that fine-tunes vision for specific sports and environments. The XL edition offers enhanced lens coverage and specialized lens curvature for protection against sun, wind and impact Unobtanium(R) earsocks and nosepads keep glasses in place, increasing grip with sweat Patented High Definition Optics(R) provides superior optical clarity and razor-sharp vision at every angle O-Matter(TM) stress-resistant frame material is lightweight and durable for all-day comfort Sunglasses include a Microclear(TM) bag for cleaning and storage Hand wash and air-dry the Microclear(TM) bag regularly