I had been looking into a short boot for an upcoming trip to China where the temps will be in the 20s during the day. I read reviews for a similar boot (Boreal) by Kamik with no zipper that got great reviews but people complained it was hard to get the boot on. I saw no reviews for this style which I liked because it had a zipper. The boot does run a tad small though. I'm 5'4" and 120 lbs. I was told years ago I had a narrow foot, but I don't ever order narrow shoes/boots. I like to be able to move my feet around. My usual size is between a 7.5 to an 8. Having read that the boot runs small, I ordered the size 8. When I first put them on, I was only wearing ankle socks, not thick either. They fit pretty snug, yet I still had some toe room, and I also felt a little bit of a heel slip in the back. At first I thought to wear a sweat sock would make the fit too tight. I wore the boots in the house for about 20 minutes in the thin sock and they were very comfortable. The next day (today), I put on sweat socks and they fit great. I guess wearing them around the first day padded down the inner fleece lining making more room. There is a fleece insole that can be removed also, which makes the fit looser if you want to wear heavier socks. I haven't worn them out of the house yet, but I've worn them all day in sweat socks and they are very comfortable. The heel slip that I felt in the thinner sock is no longer there today. I'm happy I ordered the 8 and the shoes are very warm and comfortable from the get-go. Cute too! To top it off, Amazon was having a "Special Deal" and I got them for just under $60!
Once I return from China in Jan '11, I'll try and update my review as the boots will have gotten a workout walking and wearing in cold temps.