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Discussion Starter #1
It's those fuel less hand warmers that run for seven or ten hours.
If you're short of warmers in an emergency or your elderly parent(s) takes shorter walks in the wintertime, you can do this.
If in an emergency you are trying to extend them, or your elderly parent doesn't want to waste one for a one half or one hour walk in the winter, one can reseal them in a sandwich zipper bag and use it later in the day or the following days.
 
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