oakley holbrook xl matte black sunglasses. the holbrookâ„¢ look with the iconic style of its keyhole nose bridge and metal rivets is now available in an xl version for larger face shapes. but the transition to the larger shape of the holbrook xl matte black sunglasses doesn't compromise their comfort, which is always assured by oakley's ultra-light o matterâ„¢ frame material.prizmâ„¢ lensesprizmâ„¢ is a revolution in lens optics built on decades of colour science research. prizm â„¢ lenses offer unprecedented control over light transmission, allowing colours to be fine-tuned to maximize contrast and improve visibility.