The system uses the perforation made in the footsole to create an (easier) bend bottom, through two (or three in larger sizes) rows of small holes located on the axis set at the right angle.

The bottom of the footwear bends easier just where these holes are. This axis is set precisely at an angle perpendicular to the direction of walking, which forces the child to walk correctly.

This solution sets the correct angle of the child's feet to the walking direction.