Someone in the reviews suggested I go up a half size. Part of me is glad I did, but part of me wishes I stayed true to a 9.5. My left foot fits well but my right is a little lose. They seem comfortable, but I wonder if I had gone through the temporary discomfort of getting a half size lower than I did, if I would have shoes that stay on better and are more formed to my feet. So, I would say order a half size up for instant comfort but potential flapping of the back, or stay true to size and spend some time breaking them in. Other than that, they look very nice and are a great pair of shoes.