The hybrid system: A combination of equally sofa mechanisms, this consists of 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 Bed slides out and much more cushions carry to create the sofa mattress https://glittersprayclothes62825.widblog.com/86055299/what-does-queen-base-beds-mean