I bought this mattress pad because I have neck, back and leg pain and a full size bed. After waiting about 4 days for the pad to uncompress to its full size, I found that when I put my back in the lumbar portion, the rest of me at 5'4 was not large enoguh to fall into the correct foam areas. Also I felt I was being enveloped in foam.It was very uncomfortable. It might be a better fit for 2 taller and heavier people. I coulnd't return it since I did not have the strength to compress it to fitback in the box.