First of all, I do not understand why people would want to put these ugly ass plastic things on their feet to start with. They are so ugly they hurt my eyes. It's like wearing a tampon-made coat out on the street like it's an okay thing to do. It's not ok to wear Crocs, ok? Why were they even invented to start with. Anyways.... now, there are good enough reasons to stop wearing these horridness. They not only hurt your eyes, they literally harm you physically.
BAN THEM. FOREVER!