Description
Inside the tough plastic shell of a Hot Pack is a thick, clear liquid and a small metal disc. 'Click' the disc and you start a chemical reaction which heats the liquid to a toasty 130F in about five seconds.Once warm, the Hot Pack remains at a constant temperature for roughly 45 minutes before losing its power of heat. After use, the liquid will have solidified, and all that's required to regenerate a Hot Pack is to heat it in a pan of boiling water until the solid turns back into a liquid.
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