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Do not base your order on the picture presented.
The re-usable Hot Button hot pack instantly becomes hot once the button inside the pack is activated. The pack remains hot for at least 30 minutes. Re-usable pack is recharged and made ready for a future activation by boiling it for approximately 10 minutes. The activation and recharging of a pad can be repeated at least 100 times. The Hot Button contents are not harmful; they are common non-toxic food additives. Activate pad by gently flexing disk within the pad back and forth until pad starts to crystalize; pad will heat to approximately 130F (54C). For cold pack refrigerate do not freeze. To return to liquid state wrap pad in cloth, place in boiling water for 5 to 12 minutes. small - 3.5" x 5.5"
Medex SKU: FAB-11-1026