Excellent pain management tool
Keep them in the freezer.  Ten minutes at a time, when applied to the neck or base of the skull, for headaches.  Remove for 5 minutes and apply again for ten.  Repeat 3 times, and it gives pain relief as good as drugs, but without any side effects or chemicals.  Initial application does hurt a bit more - then the pain subsides.  Highly effective local anti-inflammatory.
Rating: 5 stars