Snow will not bother these as long as you spray them with weathering spray. They are warm and if they aren't old with worn bottoms, I think they have plenty of traction. If the snow is dirty and you get mud on your Uggs, just use the shampoo kit that UGG sells. It is easy to use. Don't use your uggs for snow if you are planning on being outside for a long time in deep snow though. The boots are warm and the snow won't hurt them, but once they are soaked through and wet, your toes will freeze!