I love these boots!!  I bought them on a whim for a trip to Lake Tahoe for the cold but not only are they amazing for warmth, they are also very cute and comfortable.  I was actually shocked by that.  They are waterproof and I wore them in the snow, no problem!  They are not bulky or heavy at all like most snow boots you would buy.  I am size 8.5-9 but generally any show I will be wearing socks with, I get a 9 and these fit very well, with or without thicker socks!!  A+