Very nice bed. The quality of the mattress is beyond what I expected. I expected thin foam pieces but the mattress is thick egg crate type material. The faux leather is of nice quality as well. Very simple to put the back on. I have an older rescue dog with bad joints due to tick born diseases and neglect in previous home so I wanted something quality for him to sleep on and this is perfect for him. he is 53lb and has plenty of room to sprawl out on. He can stretch out completely which was a concern I had when looking for larger sofa beds . I don’t think a much larger dog would have a ton of room to stretch out in it so although it says up to  80lb I think comfort might be compromised past maybe 65lb  ( if we’re talking longer legs, longer body eg. German shepherd, husky, field lab, golden etc. not talking chubby squattty dogs eg. overweight beagle, chubby pit bull , English bulldog etc) .