The hybrid system: A combination of equally sofa mechanisms, this will involve pulling, folding, or sliding a frame out to convert the sofa into a bed. For example, the bottom of your Post Nordby Pep Sofa Mattress slides out and much more cushions lift to create the sofa bed area. https://zanemkxiw.humor-blog.com/30292492/details-fiction-and-bunk-beds-with-dresser