Customizable "cubic bezier" terapeutic shoe insert

This is a customizable shoe insert or can be used to make a new sole for your shoes, or even make the sole of a flip-flop...
To adapt it to you size, you should use the "SCALE" option, knowing that the base file produce a footprint 255mm in length and 103mm in the widest part.
You can customize every curve but it may be a little tricky, maybe difficult using Thingiverse customizer as the viewing is not very detailed, but if you use Openscad it may be easier, change the coordinates of the cubic