This is the strangest thing. It's books, shrunk to a tiny size and packaged as a pack of cigarettes. You can find more about there here. I can't imagine a situation when I would need this. Maybe if you had a friend who was trying to quick smoking and also loved to read. I think if I had one of them I would keep it in my car for emergency situations when I find myself without a book.
Photos from TENOVERSIX
