heading for the sun - with the holbrook xl. the name holbrook comes from a small town on historic route 66 in arizona, where the landscape opens up to the painted desert and petrified forest national park. a typical desert wasteland of the american west that perfectly embodies the spirit of discovery and adventure of the travellers on highway 66 in the 50s and 60s. let the adventure begin!prizmâ„¢prizmâ„¢ is a revolution in lens optics built on decades of colour science research. prizmâ„¢ lenses offer unprecedented control over light transmission, allowing colours to be fine-tuned to maximise contrast and improve visibility.