I love this back massager, I have had problems for many years and actually purchased this when it came out on an infomercial many years ago. I was happy to find it on overstock. I use it everyday to relieve back and muscle pain and spasms. I received more than one since it's a "Bulk" item. I was able to give them to friends and family that suffer from back problems as well. They all love it! If you have back pain and muscle spams you should give it a try.