I have many Cobb Hill Rockport shoes and wear a 9 1/2 M in all of them.  The fit on these however from the strap between your toes to the back of the shoe was too short.  Definitely would have experienced some major blistering had I choose to try to wear them.  I would also say the top around the ankle was plenty loose so going up a size was not an option.  Looked super cute but I had to return them.