I have my first shoe in Gr. Ordered 39 because he was too small. Because he has but looked so beautiful and seemed comfortable, I ordered him to me in Gr.40. Now you could say he was a little too small, but really just a tiny bit. So as he sits now, it's really comfortable and it's light as a feather! I've bought extra an athletic shoe for my back and even after 7-8 hours of wearing hurts me nothing. I can really recommend the shoe so :)