Was very excited to get my 1st bed in a box. Shipping was a disaster..1st mattress never made it to me and had to wait a month for a dock search. They finally reordered it and this one made it to me in a week. Took out of box and watched it expand. I thought it was a memory foam but there are springs in it you can feel.  This is a guest bedroom mattress. Had visitors in and they told me it was very firm and their back hurt. Had to dig out an old memory foam to put on top and was told that made it better. So if you like firm..this is a bed for you..otherwise plan on getting a topper for it.