Zamberlan Sawtooth - Good boot

I first wore the boots in -36 real feel temps deer hunting. I was only out for about an hour and a half on 2 different mornings and my feet were a little cold but nothing that would make me head back to the truck. I also only had one pair of socks on. I've since worn them on the trap line hiking through the snow in temps well below zero. My feet haven't been a concern at all. Very well constructed, comfortable and seems to be breaking in quickly. I would definitely buy these again or even try another Zamberlan model.