Just purchased these for my daughter -- we have had them about one month.  She has used them daily to slog about in the rain and sleet; but she has also worn them while sledding and tubing in deep snow.  These boots are warm, comfortable and waterproof for daily wear, but they are also terrific for snow sports because the collar around the top of the boot keeps the snow from reaching her feet.  As a result, we can stay and play longer without my daughter getting chilly toes. Sizing was accurate and she is able to run about in them at top speed. Highly recommend.