I was very excited to find these... they were my first foray into FitFlops. I will never buy another pair. The left fits differently than the right (and yes, I have checked that they are the 'labeled' as the same size). Neither fits correctly - the left is too loose and the right seems to have a narrower toe. They would certainly not lead to any increased fitness... more like a hazard to walk in. This is just my one experience... If I had it to do over, I would try to find some locally to try on before ordering from an online source. P.S. I LOVE AMAZON!