Double-panelled fir and poplar frame. Front feet in walnut-stained beech with brass or chromium castor; rear feet in walnut-stained beech. Fixed front feet are available on request. Springing with woven elastic straps of covered rubber. Seat cushions in washed and sterilized goose down with pad in differentiated density polyurethane foam. Decorative piping in the same shade of leather or in contrast.