I bought these for my husband for work. The first day he wore them, the treads on one shoe came loose and was flapping, so he had to tape them up. He is an ER doctor so I'm sure his patients were impressed! Since the shoes had tape on them, I didn't feel that I could send them back. I had decided to try these instead of the Birkenstocks he usually wears, but we'll stick to Birkies from now on.