I am normally a size 8 and after reading the reviews I ordered an 8.5, I wish I had bought a 9.  They do size small, they are also not very flexible.  If you are expecting soft, suple material these are NOT for you. However I wore them for most of the day at work but I am not on my feet all day, and they were okay.  Probably better for an evening out rather than an all day walking boot.