Already several Five-Fingers, all still fit in 38. Have. But who was really too small or forward since the gain is quite rigid on the toes, you should take the shoes one size larger. The shoes themselves stretch though somewhat with time, but it suppresses unpleasant. Wonders how long it expresses and the shoe really fits. Therefore, unfortunately, the shoes went back. Since one rather takes these parts for walking, a number is greater in my opinion the better choice. Or simply take the Bikila, who adapts to super and is more flexible in the material. And from the comfort her even on hot days very pleasant.