The hybrid mechanism: A mix of equally sofa mechanisms, this requires pulling, folding, or sliding a frame out to transform the sofa into a mattress. For instance, the bottom in the Short article Nordby Pep Sofa Mattress slides out and even more cushions elevate to create the sofa bed floor. https://freesampledogtoys19515.blogpostie.com/52927593/5-tips-about-sofa-beds-you-can-use-today