This is an excellent mattress, it is reasonably firm, but I prefer that.  It arrived rolled up in a largish box.  The delivery driver warned us about opening it carefully so it didn't fly out of the box and into us, which I thought was nice as he didn't have to do that.  We took it out of its wrapper and laid it on the bedframe.  I was surprised at how quickly it began to rise back up again, and in fact due to space limitations I actually slept on this the first night and it was great, best nights sleep I have had for ages.  I am now considering repurchasing for the other bedroom.