So this is what it's all about. That's the card. The black around the chair is actually void, but that's harder to show on a scan. It measures 3.5"x2" and weighs less than an ounce. For the first 20,000 or so the card will have the addition of the Million Chair Project sticker, whereas the rest it will be printed.
As for assembly, you can see around the outer edge of the card there is some pretty tiny type. Those are the instructions. It's fairly straightforward, and soon I will post a "How-to" video showing the process.