Supporting structure in lacquered drawn tubular steel, seat sprung with coated rubber elastic straps and polyurethane foam. Backrest and armrest structure in self-supporting decorative HPL panel. Covering in 100% polyether, thermally bonded onto a polyamide velveteen backing. Backrest and seat cushions in prewashed and sterilized goose down, with polyurethane foam insert. The seat cushions are quilted with buttons at sight or, on request, quilted without buttons. Armrest cushions in polyurethane foam covered with prewashed and sterilized goose down, with a poplar plywood supporting panel fixed to the frame by plug-in hinges. Stainless steel feet, polished or matt satin-finish, screwed to the base with a bushing. Fabric or leather upholstery, both fully removable by zippers and Velcro fastenings.