I've owned several pairs of Allen Edmonds dress shoes and I've worn a size 10.5 width AA in each.  So, I purchased the same size in the Walden, however, the Walden fits much narrower than the other Allen Edmonds shoes I own.  After some stretching, I'm able to wear the shoes, but they are not comfortable.  I should have sent them back immediately, but figured they just needed to be broken in.  These are great looking shoes that will last forever, but they do fit more narrow than other AE shoes.