The executive and conference armchairs frame is in tubular steel embedded in a cold formed polyurethane and on it is fixed a polyurethane foam mat covered by polyester wadding. The chromed steel arms are padded on the upper part with a polyurethane foam sheet and then covered by saddle leather. The armchairs have a 5 star swivel base on casters in polished aluminium and are adjustable in height through a gas-piston and are equipped by an ergonomic mechanism (executive armchair) or tilt mechanism (conference armchair).