||With high-definition optics wrapped in a ruggedly durable, yet comfortably lightweight frame, this semi-rimless slice of Oakley engineering takes performance to the next level and brings style along for the ride. Oakley Flak 2.0 XL Prizm sunglass lenses control light transmission for improved visibility and impeccable contrast, while XYZ Optics ensure crisp clarity at every angle of view. The Prizm lenses are specialized for each activity they may be used in. O-Matter frame materials are durable, stress-resistant, lightweight, and have no-slip grip ear and nose pads to keep these shades where they belong, even when perspiring. High-definition optics cover every millimeter of these lenses and exceed testing standards for visual fidelity, optical clarity, and impact resistance. For optimum clarity in all types of activities, Oakley Flak 2.0 XL Prizm sunglasses can’t be beat!