Not sure how to describe this, but the top portion of the back of the couch folds forward and attaches to the rest of the couch with velcro...my guess is for shipping.  This would be okay if the couch sits against the wall, but I have it in the middle of a room, so if you come up behind the couch and rest on it, it un-velcros.  Still a nice sleeper sofa for the price.  Ours will only be used several times a year.  Its in an in-laws quarters which doesn’t get alot of traffic.  I would not purchase if we were around daily. You get what you pay for :)