This was amazing, I used to wake up every morning with a very achy back. Now it doesn't hurt at all when I wake up. The only thing I don't like about it is it suppose to be a body mat and it only covers me from my shoulders to my butt when I lay on it. I am 5'7"-but all in all it was a great purchase from me. I was skeptical that magnets can actually work to heal pains-but I'm telling you it works! I love you Overstock-you are the best.