The table series includes the Super-Elliptical™, the Super-Circular™, circular, square and rectangular tables designed by Piet Hein, Bruno Mathsson, and Arne Jacobsen. The most prominent member of the series, the Super-Elliptical™, table, was inspired by the designer Piet Hein's solution to a traffic problem at Sergels Torg in Stockholm: A super elliptical roundabout. The ingenious shape was conceived in his mathematical mind. This variation of an oval possessed some attractive qualities and looked surprisingly harmonious no matter the size. The formula based shape has no ends and this is why the Super-Elliptical™, table can be seen as a democratic table where everyone has an equal position. Bruno Mathsson and Arne Jacobsen contributed to the base design of all the tables.