Mario Bellini “CAB” 414 Dining Chairs for Cassina, black leather, Italy, 1977, set of two.The "CAB" is the world's first free-standing cowhide design chair, informed by the relationship between the skeleton and the skin; an authentic example of production excellence that requires multiple stages of artisan craftsmanship to create a trendy tailored-to-fit object. The "CAB" are high-quality chairs with hand-stitched natural leather upholstery wrapped over an internal steel frame. The only additional reinforcement is provided by a rubber membrane plate that supports the seat. Bellini's innovation lay in using zips to fasten the leather cover to its frame; a zip runs up the inside of each leg, sealing the cover.