I cannot believe that a Mattress that arrived in a box could be so comfortable ! I am a believer now !! We unrolled this and let it rise to form overnight. THighly recommendhen put it on the bedframe. OMG !! Super soft, but yet, firm enough to support my bad back. I also love the fact the whole bed doesn't move when my wife gets up, i barely feel her getting out of bed. I highly recommend.