when foot grow, they also grow WIDE. I was very satisfied with my other adidas slippers, bought in turkey on a vacation, they were leather.. they lasted 8 years! this ones are plastic, very soft, so nice for the feet, but they are to narrow. Long, and narrow. I dont understand how other 12 US foot look, but the ones I have seen are not only long, they also grow wide. Anyhow, this is only one thing to complain, the other thing, I dont think that they will last very long. first support structure getting lose after rare wearing in 4 months.. will look for leather again.  update: they lasted me about 6 months and I did not even wore them very often. .