Re-Shapable Board

Sorry, I don’t know if re-shapable is a real word. Anyway, about 10 years ago I recall reading and hearing about a new surfboard material. The material allows a shaper to shape a board (no glass needed), take the board out for a test run and then bring it back in to be modified (re-shaped). I think Glenn Minami was one of the guys experimenting with this. Have any of you heard anything about this?

could be some sort of polypropylene foam?