Thanks for the replies guys!
I do indeed think the black layer on the outside was film/painted layer. Amazing how well that bonds with the red foam. Though I’m pretty sure the red will show through pretty quickly on the outsole.
I’ve taken one side of the hard gray foam out. It doesn’t look like it was cut from a block, more like they squirted the material in a very rough mold with a caulkgun or something similar.
Final question, there is a partline on the footbed which corresponds with the outlines of the dark gray foam piece. Would this be for a slide to insert with the gray piece attached to the spike? Why would you need a slide that big for it (suggesting it gets inserted when the mold is closed)? Why not pin the part directly in the mold?
If I learn something interesting at the factory, I’ll post it up. Thanks again!