Standard foot wear here in the winter,Last weekend was -30 still had warm feet. three weeks ago I broke through a thin spot in the ice on a swamp about 12 mi from the house, air temp -18 made a fast run home since everyone was done playing,by the time I got here we had to break the ice [my coveralls were frozen solid] so I could walk into the house, one boot was 3/4 full the other was very wet , but neither was cold.
Alex