I purchased these boots for a trip to the snow at Lake Tahoe where the lows were predicted to be about -15 degrees. Boots are very comfortable and super cute. I ordered the size 8 and they fit me fine but if I had wanted to wear really thick socks I probably should have gone with the 8.5. My feet did stay dry in the snow but my toes did get cold. I don't think they could have lasted long in the -25 degrees these boots are rated for. They weren't slippery on the snow either. I would recommend these boots but just not for extreme cold.