THERMACARE Self-heating patches Multizone Relieves muscle pain 3 patches Thanks to its small size and 4 adhesive fixing points, the multi-zone patch adheres to all parts of the body. This cross format adapts to every movement offering 8 hours of heat. This comfortable heating patch acts precisely on pain and provides effective relief thanks to its 6 self-heating cells. This patch is especially good for the calf, center back or ankle.