What was most innovative about Marcel Breuer’s model B3 chair?

What was most innovative about Marcel Breuer's Model B3 chair was its frame. Also known as the Wassily lounge chair, the piece featured a lightweight, sturdy tubular steel frame inspired by the artist's Adler bicycle. His use of the metal started a radical shift in furniture design. You’ll find a variety of Marcel Breuer Model B3 chairs 1stDibs.