Just got these in black just 1 day before heading up to Breckenridge during a snowstorm, and my feet stayed toasty & dry all weekend. They are SO comfy after a day of snowboarding, and totally waterproof. I absolutely LOVE THEM!
I got them in a Large, and I wear size 9 in shoes. They fit me perfectly (after I realized there was some packing stuffing in the toes - der). Not sure if they would fit a larger shoe size though, unless you were only a 9 1/2 tops. They fit me like a glove though, and it's gonna be a happy winter for my feet!