These are tatami sandals. They have a slightly sloped design towards the heel. The thick soles make them safe to wear even on gravel roads. There is no size indicated, so please refer to the photos of the sole measurements. If your child usually wears 19cm shoes, the heel will stick out a little. It is considered good for zori (Japanese sandals) to have the heel slightly exposed, so considering wearing them at the perfect size, they are likely suitable for children around 17cm to 19cm.