Hot pack
Love it.  The strap is long enough to go around the body and even though you have to boil the pad each time after using to reactivate, it only takes a minute to reset and it is ready to go.  Wearing it now for my back.  I also found you could double the use by putting it on after boiling (wait until it cools down a little)  and before you click the disk.  Then when it is cool, you can click the disk and get more relief.
Rating: 5 stars