I normally wear an 8 AA and I ordered these boots in an 8 and they fit perfectly.  I don't even need super-thick socks to make them fit, which is what I usually have to do with casual boots.  That being said -- other reviewers have noted not being able to get their feet into these boots.  I'd say if you have a medium-to-wide foot, it would be difficult to put these on, since there is no gusset or zipper.  But, if your foot is on the slender side, these might work great.  They are super comfortable and don't make my feet look huge, which I expected them to do. I needed something warm and waterproof to get me through mountain winters, and I think these will work great! I also learned a valuable lesson -- whenever I'm looking for ANYTHING, check Amazon.com.  I got a tremendous deal on these boots vs. other sites I checked, and I've found that I can usually get a great deal on Amazon.com -- it's always worth checking here before purchasing from other etailers.