Sizing on the new EXPLORE 2.0 has changed slightly, please make sure to use our new sizing guide to help select the right size for your kids. On the smaller sizes between 8C and 2Y we've added some extra room for greater splay and foot function, also this helps younger kids put their shoes on faster and easier than previous models. You might notice a roomier fit in the mid-foot and a little extra room in the toes.