My job requires me to be outside sometimes and December of 12' we got weather that was in the single digits.  This thing kept my face warm in while it was in the single digits.

My only complain is that the face hole could be a little wider, if they made it just one inch wider it would be a lot better.  The way it is now is that when you put it on you can see mask kind of messes up your peripheral vision because you can see the edges of the hole.

I had also found this same exact face mask at a Carhartt outlet store for $20, it's much cheaper here on Amazon so get it.

Overall I give it 5 stars because it works exceptionally well in extreme weather.