The hybrid mechanism: A mix of both of those sofa mechanisms, this involves pulling, folding, or sliding a frame out to convert the sofa into a bed. For example, the bottom from the Write-up Nordby Pep Sofa Bed slides out and more cushions elevate to create the sofa bed surface https://beckettnphaw.blogdigy.com/the-greatest-guide-to-dreams-beds-46379070