high-performance lenses for a clear view. the holbrookâ„¢ by oakley, a timeless classic, now comes in an xl version tailored for larger faces. crafted from the incredibly durable and lightweight o matterâ„¢ frame, the holbrook xl boasts the exceptional performance of prizmâ„¢ lenses, blending style and functionality seamlessly.prizmâ„¢prizmâ„¢ is a revolution in lens optics built on intensive colour science research. prizm â„¢ lenses maximize contrast and increase the visibility of objects.