Fit to size.  I am usually a 8 1/2 without socks and that is what fit.  I wore all day the first day I got them.  Would buy again and just might in the different colors.

Update...still love them and have worn them everyday around the house and for walks.  Bought 2 pairs now because they are soo comfortable.  I hope they don't stop making these.  Love the color too in olive nubuck