The D70 has two pivoting wings, a metal frame, polyurethane foam filling, and fabric or leather upholstery. The opening mechanism consists of a lever with a securing pin that engages with holes in a graduated plate. The mechanism is operated effortlessly by a practical knob and allows the backrest and seat to assume any angle and to fold down to form a bed.

The base and all painted metal parts are finished in dark grey or satin nickel. The divan is strikingly harmonious in its form and static design, and extremely comfortable too, thanks to the way in which its soft parts adapt to the shape of the body. It has become a design icon for home, office and reception areas.