The sizing runs a little big, and the straps don't tighten all the way. My boy loves them and especially the fact that they light up. But they are very poorly made. When you go to unbuckle the strap, the top layer peels away from the velcro layer. You can see the seams when the shoe is connected to the sole. It just looks terrible. I'm afraid they won't last very long and my boy will be sad when they fall apart. For the price I paid I expected a better quality. I also bought the spiderman ones at the same time for my other boy and they are just as bad. I wouldn't recommend this brand/style.