Rodger M. wrote a review of Smith I/O Interchangeable Optics Spherical Series Goggles on January 24, 2012
These goggles are the best value on the market imo, it's like getting both a pair of low light and bright light goggles in one. You can't tell from the pictures here but the low light lens has like a blue-purpleish mirror look and the bright light lens is straight up top gun fighter pilot silver mirror steeze in the sun. I grabbed these like 2 years ago off Steap & Cheap for like $65 bucks but they're well worth retail. I rock a red hifi helmet and they only fog up when i'm working up a sweat hiking but as soon as I drop in and get some ventilation going they clear right up.