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Title: Didn't work
Review: Perhaps there is a reason these are on sale for half off? Three separate packs were used out of my box -- each became only slightly heated. After applying the first wrap, I couldn't tell if it was working or not; that's how un-warm it was. That's why I opened another. This one felt warmer, but it never became hot, or even warm enough to cause any relief to the sore, crampy muscles. I would not purchase this product again, and in fact, tossed the unused portion of my box in the trash.
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