Does the trick
Whenever I'm cold in winter, I pop one of these bags into the microwave and it does the trick. If guests come over and they're the type of people who get cold, they get a magic bag and it's always appreciated. The cons are: they don't stay hot for very long. Mine needs 3 minutes in my microwave rather than the 2 minutes on the instructions. I tore off the huge label (it seemsed to be one of those labels that's perforated and you could tear off) and the seam opened up, with grains flying everywhere. I have to take it to the dry cleaner's now to get it sewed back up... nothing major but an inconvenience.
Rating: 4 stars