Features: Made of traditional Chinese previous plants wormwood, with safe ingredients and no side effects, these self-heating patches offer relief for up to 12 hours! Pain relief patches: Get these self-heating pain relief patches. Main ingredients: Natural wormwood extract. Easy to use: Tear off paper at the bottom of patch and place onto the area that needs pain relief. Use on: Patches can be used on neck, shoulders, knees, ankles and various parts of the body. Options: Choose between a 12 pack of lumbar, knee or cervical or all three in a pack of 36! Self-Heating Pain Relief Patches | Living Social | Living Social