Every foot is different, but of course the manufacturer cannot consider this in advance. Our philosophy is to support your foot individually and at affordable prices. A correction at any price is not our goal, especially if there are no problems. However, since problems can occur if, for example, a hollow arch of the foot is always in a shoe with a completely flat insole, it makes sense to start here. Therefore, each time we buy a running shoe, we exchange the insoles for one that is adapted to the foot. This is not a custom-made one, but a preformed one that is adapted to the 3 foot types. This would not even be possible for the manufacturer of shoes in advance, imagine getting a running shoe with a very pronounced arch, but with a flat foot.
The following slideshow shows the connections and the complexity of the arch of the foot as well as the possible effects on the entire posture.