Due to the specificity of the GRUBIN anatomical bearing, it is necessary to choose the right size. In order to fully experience all the benefits of anatomical shoes, the foot must fit nicely in the anatomical insole. The following rules must be followed when determining the correct number:
1. The toes should not touch the edge of the shoe, just as the heel should not stand on the edge of the insole.
2. There should be a space of a few millimeters on the foot in the area of the heel and toes.
3. The fingers need a little free space when moving.