The hybrid system: A combination of both of those sofa mechanisms, this includes pulling, folding, or sliding a frame out to transform the sofa into a bed. Such as, the bottom in the Report Nordby Pep Sofa Mattress slides out plus more cushions lift to create the sofa bed area. https://ricardodefgh.blogpostie.com/52945213/5-tips-about-sofa-beds-you-can-use-today