The DS-600 sofa is designed by Ueli Berger, Eleonore Peduzzi-Riva, Heinz Ulrich, Klaus Vogt. A multifunctional element range. You can zip a number of the same element together until you have the longest sofa in the world. That way you can always find a new arrangement for your room. de Sede's own combination of both supportive and down-soft upholstery gives this variable sofa, the legendary de Sede sitting comfort.