Monocoque structure with steel insert. Padding in flexible cold-foamed polyurethane. Seat and back cushions in differentiated density polyurethane foam with fiber covering acrylic. Legs in matt black painted metal with satin brass foot tip, in metal hand-brushed burnished or in satin nickel-plated metal, with matte varnish. Cushions upholstery with special checked quilting. Decorative profile in the same shade of leather.