The hybrid mechanism: A mix of the two sofa mechanisms, this will involve pulling, folding, or sliding a frame out to transform the sofa into a mattress. For instance, the bottom with the Short article Nordby Pep Sofa Mattress slides out and more cushions lift to create the sofa mattress https://caidenccals.blogsumer.com/30512477/not-known-details-about-4-poster-beds