The AllModern Elsmere Upholstered Convertible Sofa does not have a mechanism, only unclip the leather straps about the back cushions to expose far more mattress space. We enjoy the relieve from the hybrid system on our best benefit pick, the Post Nordby Pep Sofa Mattress way too. Long-Long lasting Frame https://interestingfacts88419.pointblog.net/what-does-queen-base-beds-mean-73246365