Children love to run and play. They like to move their bodies and put tons of energy into everything they do. When elementary students mention their favorite parts of the school day are recess and physical education, there is a reason.
A lot of people have recently expressed their opposition to kids flip flops, some of them even asking this commonly used footwear to be banned. Being a fanatic "flip flopper" and having walked with them all over the world, on rough, wild surfaces, I think that this obviously comfortable for adults footwear, if not worn in the right way, could be really dangerous for the health of young children toes.