No I use them being outside. Like I said in extreme cold only, -20 to -30 Celsius. In those temperatures I usually need to keep my jacket collar up high and that makes my glasses fog from breath = moist air. And once they fog up, the moist air freezes to the lenses and visibility goes to zero. And I can´t see very well without glasses. Wearing goggles over prescription glasses solves this problem.Do you only need the goggles only when you come in from the cold?