Utrecht armchair, by Gerrit Thomas Rietveld for Cassina, 1935, consists of a steel frame, polyurethane padding and blanket stitched pigmented leather upholstery.
Superleggera chair, by Gio Ponti for Cassina, 1957, in lacquered ash. After years of design refinement the wood frame was paired down to a minimum weight of just 1.7 kg