6690 models consist of a tubular steel frame, a thick multilayered beech plywood seat and backrest, entirely upholstered with piping all round. It is durable, stable metal framed seating for persons up to 300 kg or 660 lb, fitted with an extremely comfortable and soft upholstered seat. It is obtainable as chair or armchair with plastic arm pads. The armchair, including the seat underside, may be upholstered with a special fabric which is pleasant to the touch, hygienically impervious to germs and liquids and easy to disinfect. The well-designed accessories are optional additionals, such as IV stand and push-on tray.