I have had the mattress for 5 months. I wake up with mid back pain, low back pain, and headaches EVRYDAY since getting this bed. I have tried every number for days at a time trying to get comfortable. When I decided it was hopeless, I was a day over the trial return date. I am stuck with this crap and still paying it off. the mattress slides from bottom box spring. I go to the chiropractor more often than I should and I even told him that I had no idea why it is making me worse. Not even he approved the bed.