So VERY disappointed. I bought this full size mattress to have after cervical neck fusion. It feels soft at first touch and when you first lie down, but within 15 min or so it's hard as a rock; the main foam body must be extremely dense and solid. I'm going to have to figure out something else quickly because my surgery is in two weeks. To be fair, the unbelievable difference between "original" price and sale price should have clued me in that it was too good to be true.