I find it very difficult to buy shoes online. I wear 10.5 M. The orthopedist measured my leg. Sometimes when I buy shoes from a store, the shoes are 10, 10.5, and I have 11. I personally think that the manufacturers' shoes don't go through quality control like they should. I just don't understand how shoes can be a certain size and it isn't. I will say these are beautiful shoes. I would also like to thank Revain for their help with the return. It means a lot to me and other buyers.