My ten year old wants a pair of those sneakers that have the wheel in the back you can roll on. I have been trying to figure out the types online. We ordered a pair of "healeys" from amazon and are waiting for them to come. In my mind I thought there was a different kind of shoes with wheels in the back where the wheels were much smaller and subtle. He wants to wear them to school. the healeys seem like with the big wheel it is potentially dangerous and also that the school wont allow them. Is there another kind that has smaller wheels?