I wear an 8.5 and first ordered these in a 9. They were waaaaay too tight on the top of my foot and at the heel, so I sent them back for a 9.5. Those fit well, slightly roomy but will be perfect with a little thicker pair of socks. However, that pair arrived looking as though they had been worn previously--the soles were slightly scuffed and there was creasing around the ankles. I've just sent those back for another 9.5 and am hoping the third time is a charm so I can wear them already!