Per the other reviews, order a half a size down.  I only recently discovered that I should have been wearing shoes in a 9.5 W instead of a 10.  I ordered a 9 W in this shoe, and it was perfect.  This is THE MOST COMFORTABLE dress shoe I have ever worn.  Period, without exception.  I immediately put a brown pair in my cart and, together, my dress shoe needs are taken care of.  Ive worn dress shoes for 10 years, often standing for hours at a time, and nothing comes close to these.  I can not recommend these highly enough.