I have only worn these twice since I own them, we only had 2 snow storms so far this season but from what I can tell, they are very warm & comfortable. Both times I was out in the snow taking a walk and shoveling while wearing these boots and they really kept my feet warm and were comfortable. They are on the heavy side, though. I guess that means they'll hold up longer? They are also insulated. They fit true to size. A little expensive but definitely a good buy.
I bought 3 pairs of these boots. one for each daughter and myself. I read the reviews and went with a 1/2 size up, I am normally a 71/2 and ordered an 8. One daughter has very small feet and hers seem a little big , normally a 6 bought a 7, but she LOVES them. Wore them in the snow and my feet were toasty warm, even without socks. The sole insert comes out, when you pull your foot out , but I love how I can just slip into them easily for a quick run to the car or trash.
Fantastic boots....warmest boots I have ever owned. I like them because I can just slip them on too. Great for shoveling, or snow blowing. I am looking forward to using them snow shoeing also. They are a little stiff though....but are breaking in pretty good.