It feels like you are sitting on a couch!  I got it to replace my old mattress that hurt my back.  Ordered the full size.  It is slightly too short on the sides but its nothing that I can complain about. It does fit on the frame but there is some space between the frame and armrest.  It is heavy...so 2 people to move it are good, but my strong female self was able to manhandle it.  It did have a smell at first like everyone says but some febreeze and burning a nice candle took the smell away within a day.  I ordered the navy and I love the color!  its definitely worth paying the extra for comfort.  I have fallen asleep on it a few times already.