Got them for my 12-year-old along with the little charms the kids stick in the holes. She immediately put them on and skip away, only to shriek and stop in her tracks due to the unexpected little mini-spikes that are all over the insoles. I guess you get used to them, but I'm not sure of their purpose, especially for the soft skin of kids. But she wore them - with socks this first time, which was nuts. But I don't ask questions.