This mattress has the firmness my husband needs as a back sleeper, and me the cushion I need as a side sleeper.  I no longer toss and turn trying to find relief for the pressure on my shoulder (and waking him up), and I wake up without stiffness or discomfort.  It took us both a week or two to get used to the feel because the mattress conforms to all your curves.  Overall, it is a great mattress, and I would recommend it. [This review was collected as part of a promotion.]