I was a little nervous about ordering these because the reviews seemed to be so mixed, but I'm so glad that I did!

I normally wear an 8, or 38 in European sizing, with average-width feet and I ordered the 8. I feel that they fit true to size. I wore with fairly thick Smartwool socks and they were perfectly comfortable. I wore them all weekend on a ski trip where temps varied between 8 - 38 degrees Fahrenheit and I stayed comfortable -- not too hot, and never cold. I can confirm that they are indeed waterproof -- not sure how, considering the material feels very soft, but they kept me dry. I was also worried about the salt that they use on the sidewalks causing white buildup on the black boots -- but it all wiped off with no residue.

The other concern that some reviewers had about them being difficult to get on seems completely invalid to me. They pulled on and off just as easy as an UGG boot does. True that the buckle is purely decorative, but I could see absolutely no need for adjustment.

If you're on the fence about these like I was, I would encourage you to order them!