Went to shop today and took some photos that show the complexity of the Gedore foam cutouts...different depths even on the same tool sometimes. The foam is 1 5/8" thick. Notice it's not a perfect rectangle either...they even cut the front and aft sides to accommodate the drawer divider holder sheet metal.
The recesses look as if they may have been thermally formed in the blue layer. Some foams can be thermo-formed, if you have a tool form, heat it, and press into the foam. it collapses the foam and forms a tough thick coating, not really "melted" together, but like that. I've seen that in other european things with foam used in similar ways. If they make many of them, that is likely what they did.