Here, cardboard is used in one of its classic forms: namely as suitcase. These suitcases have been a tour de force for over 80 years and are still produced in the Czech Republic. They are very solid and show extraordinary detail: corners and edges are bent out of the same piece of cardboard, the side pieces are riveted on; the corners as well as the edges are reinforced with steel sheet; the wooden slats on the outside, and in the larger suitcase inner wooden frames, provide total stability to the suitcases. The locks (in the two larger cases with key), the fittings and the handles are also made from steel sheet. The inside is laminated with paper.