Good idea but…
It is not easy to get electric heat on the ankle or Achilles and wraps that you heat in the microwave don’t stay warm long. Thus wrap can do the job…but not as well as it might. The wrap is long but the heating element is only a few inches long. Some heat travels down the wrap beyond those few inches, but it gets very warm only in a short segment.  So it can’t heat a large area and getting the heat where you want it can require some trial and error.  At first I thought the thing was useless. But after a few days it is helpful.  But not sure why a longer heating element can’t be used to make this a much better product.
Rating: 3 stars