Mattress sag on a pillow top, plush, and firm bed: How or Can you fix them? What's behind their failure? This article goes into detail about sagging problems.
Just put the pillows beneath the area and you will be able to sleep easy on an even surface.. Best ways to fix your sagging Spring mattress/Box spring mattress.
A sagging pillow top mattress decreases your quality of sleep as the pillowtop's cushioning loses its plushness over time, and results in awkward sleeping posit.