I have had several pairs of Uggs short boots (same height as this but not slit on the side) and love them. I wore a size 10 in those, but could not even get my foot into these until I tried an 11, and even then it took a pretty good tug. I know they'll soften with time, but if you're ordering online, I thought I'd just put it out there so others could know... if you have a wide foot and/or tall arch, consider going up a size. Other than that, these are a great style that are comfortable and fun... just what you want from your Uggs!