Lens: Plutonite (polycarbonate) Frame: O Matter Case Included: microbag Face Size: large Base Curve: 6 When you walk into the pale morning light on your way to work, it seems like you don't even need sunglasses. You know better though, and are sure to bring the Oakley Holbrook XL Prizm Sunglasses every day in case the clouds clear and the sun beams down full force. This expanded version of the iconic Holbrook is sized to fit larger faces while maintaining the look you love about the original. The lightweight frame houses Plutonite lenses with Prizm technology, which work to optimize the colors you see for the best view.