This mattress came with a lot of "hype" about the "memory foam" & how comfortable it was.  Not so.  I am the only person who sleeps on the mattress & I have a bad back & an arthritic hip.  It took about 2 months & the mattress had a "sag" in the center of it.  My old coil mattress had the same thing but after 10-12 years!  The "memory foam" remembers alright.  It remembers & it also never forgets, so it never retains its original shape.  The Therapedic Memory Foam mattress was definitely NOT worth the $600 spent nor is it anything close to what the company advertizes.  I contacted the furniture...