Bought these sandals for my 2 year old daughter. She's starting to outgrow her size 6 sneakers, but based on other reviews saying that they run large, I ordered size 6 for this summer. Her feet are 5 1/4 inches and size 6 fit her very well, with just a little bit of room to grow. We've tried size 7 in the store and they were way too big. The sandals are sturdy, easy to put on, and she can run and jump in them with no problem.