Prior to purchasing this bed, I had bought a sleep number (don't, they leak and have a middle foam peice so you can never sleep in the middle) and another Sealy regular spring bed only two months ago and hips and back still were an issue. Neither through Overstock.com. THIS bed is amazing, very supportive, very comfortable, great value. Might want to 'air' it out a day as they suggest, it does go away (the chemical/foam has a slight odor that dissapates). I put it on top of my other box springs and I LOVE this bed. After spending more than $3,000 on other beds over the last three yrs. THIS is the solution for firm, restful sleep. Wow.