I have worn these shoes for years--they are the only comfortable shoes I have ever found.  I wear a 6 1/2 M.  Unfortunately, I ordered the same style and size and when it arrived, I compared it to my old shoe.  1) it is shorter; 2) the top of the shoe comes up higher on the top of my foot which I do not like.  I have a high instep and they are to small and too tight.  I am Soooo disappointed!  I do not understand why they took a perfect shoe and turned it into something that is uncomfortable.  I do not know weather to order a half size up, or wider.  I hope everyone complains to the company about arbitrarily changing a standard shoe size.