This review is for those whose backs are so bad, the FIRM mattresses only put you in more pain. Unless it has a 4 inch topper, no matter how "plush" a plain memory foam mattress states it is, it always seems way too stiff for my bad back. As a hybrid, this mattress almost has the feel of a traditional mattress with a 4 inch topper. It relieves the pressure needed for a bad back on an adjustable bed at a fraction of the cost of the big names. What's great about this mattress is that it can accommodate my spouse, who is a side sleeper.