I usually wear an 8.5 shoe and ordered the 39 after reading product reviews.<br />My feet are sensitive and get blisters very easily, even with old shoes that I have worn before, if the conditions are wrong. For eg, too hot or my feel are swollen from air travel or wet from rain etc.  Many holidays have been ruined by unbearable blisters and I have been forced to disembark from planes more than once in my bare feet.<br />These shoes are wonderful since they stretch and I wore them straight out of the box the same day. No blisters and no problems.They look good too. I recommend them.