It fits great and does not move once it is put. 5s on the upper left. Also the shoes were too wide for my child?s feet. I wore these slipper socks about 20 times over a 3 to 4 week period in my house only, and 2 holes have appeared in the toe area. my son loves these shoes. 5 toddler. Der Sound ist für mich satt, ein wenig zu Basslastig und ansonsten ziemlich gut. Im really happy that I could afford something of this quality. But I do not have any flat foot problems. She loves to put them on and play.