The blue iridium is probably oakleys most versitile lens. Not the best lens if it's bluebird and the suns scorching down and not the best lens if it's socked in and snowing 2" an hour. But if I had to pick one lens to wear every day of the season this would without a doubt be it. Works extemely well in partly cloudy conditions. A very good lens when you don't know what the conditions are going to do. Like those days when the clouds are moving fast and it's sunny one run then completely overcast the next, can't go wrong with the blue iridium. Super versitile and they look awesome too.