About wearing geta, a useful clarification is needed given many complaints about the size.
First, it should be noted that the straps are taut when getas are new foot rest back and a bit more than the back. Over time, the strips relax, take the shape of the foot, and it is set up small to small.
Another thing, wearing geta by the Japanese as the foot is still a bit beyond the back, unlike the western port which means that the foot is fully on the geta. Say in conclusion that the excess foot 5mm or 1cm is normal and is not uncomfortable once you get used to.
Among the various comparative tables found on the internet, which have quite significant differences, here are those who seem most realistic, in our experience. These comparative tables provided by Wikipedia. Mondopoint size correlates well with the length of getas mm. Some pictures found on the internet give the size 24 cm (women) equal to the 38 or 38 1/2 French, when in reality it is the 36.