Sags in many places, the edges especially.

I'm surprised at how poor this mattress is, given the manufacturer. But it's lumpy, it sags at the edges where you habitually sit when getting up or getting into bed. It sags where you have been sleeping. I'm on the verge of buying a new bed, I planned on buying Sealy. But when I checked to see who manufactured the back-breaking bed I'm sleeping on now, I was shocked to see the name "Sealy Posturepedic."