These are very warm and repel water like crazy. I haven't tried them out in snow yet but they're tall enough that I'm not worried. The only thing is they run REALLY big. Like a whole size too big. Just order your size and two down and try them on and return what doesn't fit.
UPDATE: I wore these through March, put them under my bed, and pulled them out in October. The heel started coming loose. In the last week and a half I have sent 3 emails to the company and gotten absolutely NO response. I would encourage everyone to avoid Propet at all costs. They obviously don't care once they have your money.