Probably not for extreme cold
I really liked these shoes and it was hard for me to decide to go with a different pair. However, I was looking for a boot that could withstand -20F temps while snowshoeing, dogsledding, or just standing around. They were very light, comfy, and I liked how they looked but I didn't think they would be warm enough for really cold weather in Alaska. They're probably great for standing around in +20F temps or more though.