"I dream of a chair that could pivot and swivel without the need for mechanical devices" said designer Marc Held.  His sixties chair design, the Culbuto, made out of glass fiber and polyester with white coating, and leather, wool or fur coverings, riffed on Arne Jacobson's Egg chair but it had a dynamic energy all its own. The idea was that walking is less tiring that sitting still. After 9 weeks of Covid isolation, I certainly would agree!  Knoll issued three versions of the chair and later his own company even included a version for children. Michele Champenois has written about Held in two books and the wonderful Parisian store Norma is featuring them this week.