I read where people said they simply floated off to sleep and were energized after a nap, and were able to sleep through the night. It has a special fiber in it that regulates or monitors your temperature and improve circulation. I was not a believer, but thought it couldn't hurt to try. Well, if you sleep hot, you will now sleep comfy, and if your feet sleep cold, they will now sleep perfect. Leg cramps, going, going, gone from distress, and fizzy feet are no more... I have this on TOP of my grandeur topper, and it is fantastic. It great great just on top of a regular shore rental bed.