Here are the boots I have been using for about 5 years now and I live up in balmy Canada. I know they look a little dressy for skiing and sporting activities but they are good quality leather and the high quality sheepskin definitely helps keep the feet warm. The zippers allow you to open the boot to get your foot in easier and they are a bit higher so the help keep the ankle/lower calf warmer.

https://eglifarm.com/collections/boo...w-hudson-boots

This sheep farm is actually located near here so I am a touch biased but that being said, they really are kick ass boots!