Not as good as people make it seem.
After one season with these I have to admit these are nice but are nowhere near perfect. First, fogging issue is pretty bad. I was at the peak of Keystone last season and the snow was blowing around and these things were fogging up badly. So bad I had to take them off and rough it without them. Second, they fit ok but I think anyone considering them should really try them on to make sure they fit properly on your head. I'm probably going to get a different pair that I can rely on when I'm at the top of the mountain. These get a two star from me.