The hybrid system: A mix of each sofa mechanisms, this includes pulling, folding, or sliding a frame out to transform the sofa into a bed. One example is, the bottom in the Report Nordby Pep Sofa Mattress slides out plus much more cushions carry to create the sofa mattress area. https://knoxgiiki.izrablog.com/31583185/everything-about-laptop-stand-for-beds