That's Sweet! I wonder if I can make one out of recycled pvc sheets so I can have it out side, don't see why not.
I also wonder if the set will fold up if you scoot your but too far back. There is no support on the back 1/3 or the stool. And I would make the stool detachable from the base so they could be used elsewhere. Wouldn't be hard to make router patterns for this.
Some things are meant to be closed. Your mind isn't one of them.