I originally ordered what is listed as the US 7M, but had to order the 6.5M as it was too large, and I am on the larger end of 7M. I didn't return them because it was going to take too long. I just gave them to a coworker who also loved them. Other than that, they are beautiful. The blue is a royal blue. They are comfortable considering the style. The strap was a little weird, but they were a highlight of my wedding.