my son loves the little hook by the heel so he can pull it on himself.  It reminds me of the military grade rugged silicone ipad covers in that all around the shoe you have extra rubber like bumper cars but its perfect for a toddler who is constantly running into things.  They are good quality, well built, and my son seems to feel very comfortable in them.  He wears a size 7 so in the beginning he felt they were big on his feet but he grew comfy quite soon.  I'm sure as the sizes go up it gets easier to adjust more quickly in the beginning.