Chaise longue à réglage continu, also Chaise longue modèle B 306 à réglage continu or Chaise longue B 306, is a chaise longue designed by the French designer Charlotte Perriand, who worked in the atelier of the Swiss-French architect Le Corbusier and his partner Pierre Jeanneret. Le Corbusier and Pierre Jeanneret participated in the design process.