I bought these for my 3-yr-old who excitedly put them on. Then she immediately took them off and totally lost interest, and never wanted to put them on again. I don't blame her, either -- the front part of the slipper is very big and bulky, and the entire slipper is very stiff. They would definitely impede normal kid behavior, like running, jumping, and walking. I needed something to keep my daughter's feet warm in the winter, but I'll have to find some slippers that are more practical.