Why didn't I buy this before?
Bought this heat pad for my wife who has suffered from persistent neck and shoulder pain. Reluctant to try this but eventually gave it a go and Wow! So much better than Wheat Pads and Hot Water Bottles and so much better than Iron Oxide heat pads....better than everything else. Only time will tell if this pad cures the underlying musculature problem but it has most certainly brought immediate pain relief.