Steel frame covered in polyurethane foam.
External covering in cowhide.
Zippered removable internal covering in fabric or leather, upholstered with polyester wadding and edged with cotton tape.
Chrome-plated base with castors in black plastic with safety brake for soft flooring and carpeting (type A); upon request, castors with soft tread are also available, in grey, with safety brake for hard floors in wood or marble (type B).
Equipped with pneumatic height-adjustment mechanism.