It shipped and arrived in two days.  I opened it already in position on the box springs and this was a great idea.  It expanded as soon as I cut the plastic.  I slept on it the first night I got it.  I am a large man and used to wake up with hip and back pain.  I have not had those pains since sleeping on this mattress.  I actually stay asleep all night and wake up more refreshed.  Hd I known I would have bought a memory foam mattress sooner.  It is medium firm, so it cradles you a bit, but not so much it makes it difficult to get out of.