I live in Alaska and do lots of backcountry skiing in all kinds of conditions. These goggles have performed flawlessly. I have 2 lens. The sensor mirror
is a great all around lens, but really shines in flat light. The platinum mirror is great in the bright stuff. They haven't fogged up at all. I love how they fit with my helmet, which is a Giro Fuse. I've bombed down the groomers at Alyeska and Eaglecrest and they did their job perfectly. On top of the performance factors, these goggles look very cool. I couldn't be happier with my goggles.