well first off it's not the same brand name I ordered. I ordered "Alwynn".  The box it came in with the instructions booklet and the razor slicer said "Mellow".  Secondly it is NOT 12" high, more like 9" high. Thirdly you can't flip it to reverse side for even distribution only because the "pillow top" is on one side.  I'm sleepin alright at night but it is TOO plush.