I ordered cariumas and returned them. I thought they were super cute, but they were not comfortable on me. I think it was either the rise on the upper -- cutting into that bone on the top part of my foot (metatarsals?) -- or it was too narrow a toe box. (Sorry, I bought two at the same time and one had each problem, so can't remember which was which.) They seem to work okay for some people though. The return was pretty easy -- my memory is that I took it to World Market and they returned it from there.