I purchased these Merrell shoes because of all the great reviews, and I wanted a pair of slip-on shoes.  Being Waterproof was a plus.  During the winter I wear two pair of socks, and because the reviews stated they run a little small, I ordered a size 10 instead of my usual size 9.  They fit perfect, with two pair of socks.  I just received 12 inches of snow, so being waterproof will help this winter.  Time will tell how they wear.