The "Chaise Sandows" is an important design by René Herbst that he introduced at the Paris Salon d'Automne des Artistes Decorateurs in 1929. His innovative use of an external tubular steel frame with elastic cords for the seat and back looks as starkly modern today as it did then. The pitch of the back is adjustable to several positions. 
 
This pair by Ecart International were editioned in the 1980s.