These boots keep my feet toasty warm, even in the snow and ice in Boston.  They are waterproof and also very comfortable to walk in. The only drawback is that they are very NARROW and also run small.  I wear a size 9 and had to send back the original size 40 I bought in exchange for a 41.  The new ones are a bit long but still quite narrow - not sure I could fit thick socks inside comfortably. Definitely order one size up.