It is one of the best ideas I've had. I sleep very comfortably. At age 72, I could not think of spending the money for a new king size mattress. I have had 6 major joints replaced and riddled with oeosteoarthritis. The soft support it gives me is great!!
I cleaned my Az. Room tile floor, unwrapped it and laid it on the floor to air and relax. I then dragged to the bed & pulled it on top. "Wala" perfect !!