There is a an understated appeal to the Butterfly Chair that I can't quite put my finger on. Perhaps because aesthetically it seems to have been created yesterday when in fact it was designed way back in 1938. The Butterfly Chair (also called the Hardoy Chair or the BKF Chair) was designed by Argentinian architects Grupo Astral for a project in Buenos Aires and officially introduced in 1940 at the design exhibition Salón de Artistas Decoradores. Originally composed of two bent tubular steel rods and a leather sling creating a suspended seat, the Butterfly Chair was an instant classic. More than five million copies of the chair were estimated to have been manufactured during the 1950's alone. It is, however, still very much present in interior design, so if you are thinking of purchasing one for your home you can't go wrong.