Too Long Heating
I don't know what kind of clay the beads in this are made of, but even after heating it for 6--7 minutes in the microwave, it was barely warm enough to do any soothing, and it cooled very quickly.  I am not only afraid of what might happen to it if I heat it for 10 minutes or more, but I certainly don't want to wait that long.
Rating: 3 stars