I have size 39 and bought the shoes in 39 1/3. When I wore them, they were a little hard reinzubekommen, but it worked, and are incredibly comfortable. I've worn the same room without much movement, but after 1-2 hours they pushed forward on my toes so hard that I had to return it immediately. I wonder how it would be if I'd gone to play with those football .... Too bad, because the shoes look really super feminine