Zero Issues & Does What it Says
I have only been using these goggles for a few weeks but they have been great. I have only had one issue of condensation and fog forming inside of the goggles, which occurred the first day I wore them. Ever since then I have not had any issues with fog. I am a pretty big dude and they fit my face very well. Given the fact I got these on sale for about 50% of the normal cost on Backcountry and that they come with an extra lens, I think these goggles are a great value.