We are enjoying transformable sofas in the market, which can transform into bed. The design we are experiencing now is a half fold design that is, when fold it is a sofa and when unfold it is a bed. But the latest sofa is quite different. We can roll over to use as a sofa and roll down to use as a wide and furnished bed. The innovation lies where the sofa transforms to a bed with a single click. Can't believe? Yes, it is supplied with electrical connection where you should plug in to the socket to make it work.