Product Description PRIZM GOLF HALF JACKET® XL 2. 0If youre trying to keep up with the competition, you need to keep up with changing light. We engineered Half Jacket 2. 0 to let you swap out the lenses with ease. When theyre mounted, youll have impact protection that meets uncompromising standards. Optimized with Unobtanium® earsocks to grip better when you sweat and a lightweight O Matter® frame for comfort and durability. FEATURES- PRIZM 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® earsocks and nosepads keep glasses in place, increasing grip despite perspiration- Interchangeable Lenses let you change lenses in seconds to optimize vision in any sport environment- O-Matter stress-resistant frame material is both lightweight and durable for all-day comfort and protection HIGH DEFINITION OPTICS®High Definition Optics® (HDO®) is a collection of patented technologies that allow Oakley eyewear to meet or exceed the testing standards of the American National Standards Institute for optical clarity, visual fidelity, and impact resistance. PRIZMPrizm is a revolution in lens optics built on decades of color science research. Prizm lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility.