Iridium is a precious metal which is used to create a 12 micron thick coating added to some of Oakley's lens tints. The coating reduces glare, increases contrast and has a cooling effect on the eye on a hot sunny day by reflecting the Sun's heat.
Oakley Iridium lenses are available in a number of colours including
Titanium Iridium Fire Iridium Ice Iridium Black Iridium Gold Iridium +Red Iridium Blue Iridium Ruby Iridium VR28/Black Iridium