Swivel armchair on fixed base which can become a chaise-longue with different tilting positions. The back and footrest are movable; the different positions can be adjusted respectively through the use of a small lever operating a gas spring and of one side handle. By a single, simple movement the back returns to the upright position. Small lever, handle and base in nickel-plated steel. Steel frame, padding in CFC-free polyurethane foam and polyester wadding. Fixed fabric or leather upholstery. Removable overcovers in special fabrics are available for head and footrest.