The hybrid system: A mix of both equally sofa mechanisms, this requires pulling, folding, or sliding a frame out to convert the sofa into a bed. One example is, the bottom with the Post Nordby Pep Sofa Mattress slides out and more cushions carry to create the sofa bed area. https://dise-o-web11085.blog-gold.com/38435313/the-ultimate-guide-to-dog-cave-beds