I wear an 11, in these shoes I wear a 12!  an 11 is a perfect fit for me, but not with these!  If you are a long time wearer of Asics, please be advised the sizes have recently changed!  As always, Ascics delivers.  I am not a runner, but love a comfortable shoe.  As a former runner I can say, these shoes are well built.  Of course, they look great as well.