Purpose lens which is perfect for you who do not bother to change lens every day. Oakley Flight Deck XM Prizm Jade Iridium lens is made to be used in changing weather. From sunshine to overcast and snowing. With Oakley Prizm highlighted contrasts, colors and differences in the environment, so you always get the best possible visibility. It is a green mirror lens, so you can not see your eyes through the lens.