One-piece frame in birch plywood. Differentiated density polyurethane foam filling with acrylic fibre covers. Springing with elastic straps in covered rubber. Base in semi-gloss black-stained beech. Feet in satin brass, in hand-finished burnished metal or in satin nickeled metal, with matte varnish. Cushions and border upholstery with a special square quilting. Decorative piping in the same shade of leather; upon request, it is possible for the decorative piping to be in the other shades of leathers shown in the catalogue.