The AllModern Elsmere Upholstered Convertible Sofa doesn't have a system, only unclip the leather straps about the back cushions to reveal extra mattress space. We benefit from the simplicity in the hybrid system on our best benefit pick, the Posting Nordby Pep Sofa Mattress way too. Long-Lasting Frame Design Sleeper https://2159023.bloggerbags.com/36234224/step-by-step-beds-an-overview