It doesnt HAVE to be for pain relief :)  Nice shoulder warmer perfect for my cold office.
[[VIDEOID:6775e1f4e036820e4a32310891c118da]] It doesnt get super hot so its more of a 'warmer'.  Its good for consistent heat all day while typing.<br />The timer on it is a good idea to prevent falling asleep on it and getting burned.
Rating: 5 stars