karup design frame for roots futon sofa bed | easily converts into day bed karup design a . timeless . piece. a timeless sofa bed. roots 140 sofa bed is the essence of the karup design dna: you get not only a futon sofa but also a twin bed with the possibility to raise a comfy back rest on which you can recharge rooted to the ground. double up the back, fold over the futon mattress, and now you have a regular-height sofa bed. roots 140 transform quickly and easily – just like magic. get the idea?