It works!
I have an arthritic neck and muscle; tension which cause me great discomfort, to the point that it affects my appetite, make me dizzy and so miserable I don't feel like doing anything that requires movement, especially walking.  This neck warmer is almost perfect for me.  I heat it in the microwave oven for 2 1/2 minutes, it heats evenly, the clay beads retain the heat long enough that I can fall asleep and wake up feeling fine.  My only suggest9on:  make the back  wider, so it reaches better those muscles between the shoulder blades.
Rating: 5 stars