These electric 'hydro therm" Or some other term electric hot packs are wonderful!
They're (obviously) electric, with a forced typed switch, (You must hold it "ON") let go, and it shuts off, they can get so hot, they'll burn. They're packed with something like "sand" which holds the heat. And wrapped in a wool outer sheath. (The wool, brings moisture to the heat, thus making it "Moist Heat".) True! They work!
They're made by the same company as most Chiropractors use. (Dam Tbi)
Get the name (sorry, I just cannot think of it @ the moment)
They're wonderful devices
I had one to wrap my neck.
One to cover my back.
Wifey took care of that. Not mine any longer....
But, they're GREAT.
And, if you get headaches,
the ones you keep in the freezer, and stay malleable are wonderful too!
No heat on a Migraine! Ice cold in a towel!
If I could only remember the name!
grrrRRRR!

pete
very bad!