The AllModern Elsmere Upholstered Convertible Sofa doesn't have a mechanism, only unclip the leather straps over the back cushions to expose additional mattress space. We enjoy the relieve of the hybrid system on our best worth pick, the Post Nordby Pep Sofa Bed way too. Long-Long lasting Frame Building Sleeper https://finnbwmds.newbigblog.com/37065043/the-all-size-beds-diaries