Concept is great, but does NOT work. "Organ"izer is cute, parts are ewie and squishy, fun to put together . . . oh, that's where it breaks down, literally. You can't put this together. The parts do not stay in place, so you can not assemble this and then stand it up on display. You can put the parts in, but then that's it. Forget the rib cage and plastic housing all together. I was really hoping for a fun way to teach my kid about the human body. This is not it.