Having stayed a long time wearing barefoot shoes of another brand, I now have the concept the Sole Runner curious. After the evidence that would turn me shoes too big, have a little unsure, then I have the Flash after previous Fußvermessen then but in my ordered normal, usual size. That was good so I could use almost even bigger a number on the right foot. The barefoot feeling is just wonderful and probably hard to beat. Furthermore, the model is suitable for everyday use and not really fall as Barefoot shoe compared to normal shoes on. Update: I switched to the T1 because with wider feet of space available. Nevertheless I can recommend the Flash.