After 10 years with our pillow top mattress I started getting a concave on my side. (6'2 210lbs) This top is awesome. It not only helped even out the bed it made getting into bed put a smile on my face. It's called extra thick but it's not too soft. I know some people have a problem with back if its TOO soft. I feel this is just right. With the quality stitching to keep filling even it is just right for me. It contours to my hips as a side sleeper. Back sleepers shouldnt have a problem either. Much cheaper than buying a new mattress thats for sure. Not firm but not to pillowy. Just right. 5 stars. Make sure to open mattress and set it over to couch for 24 hours to puff out from being vacuum sealed before putting on the bed.