Oakley Flight Deck XM Prizm Sapphire Iridium Lens is an all-round lens for the popular Flight Deck XM goggle. It is a Prizm lens. Prizm technology highlights the contrasts and colors of the environment, to give you maximum visibility. Allround lens is made to ensure good visibility in all weather. Iridium coating limits the glare of the snow for an even perform vision. Of course with 100% UV protection.