This is my 3rd pair.  I love these shoes!  I normally wear a 9 in regular tennis shoes, however, since I don't normally wear socks with these, I size down to an 8.  They are a little snug at first, but they stretch a little after a few wears.  I started wearing these while I was  a bank teller, but now that I'm an elementary teacher, they are a lifesaver!