![Cody on Twitter: "A bit on hand warmers: they contain iron powder, salt, vermiculite, water, and sometimes charcoal. They get heat from rusting the iron. They are very similar to oxygen absorbers Cody on Twitter: "A bit on hand warmers: they contain iron powder, salt, vermiculite, water, and sometimes charcoal. They get heat from rusting the iron. They are very similar to oxygen absorbers](https://pbs.twimg.com/media/FkVKUL6VsAAu_iE.jpg:large)
Cody on Twitter: "A bit on hand warmers: they contain iron powder, salt, vermiculite, water, and sometimes charcoal. They get heat from rusting the iron. They are very similar to oxygen absorbers
![Reusable Pocket Hand Warmers, Snap Heat Pack, Hand Warmers Click, Kids Hand Warmers Boil Click Heat Pocket Hand Warmer, Pouch Gel Hand Warmers Long Lasting Warmth for Camping, Outdoor (ABCD) : Amazon.com.au: Reusable Pocket Hand Warmers, Snap Heat Pack, Hand Warmers Click, Kids Hand Warmers Boil Click Heat Pocket Hand Warmer, Pouch Gel Hand Warmers Long Lasting Warmth for Camping, Outdoor (ABCD) : Amazon.com.au:](https://m.media-amazon.com/images/I/81aXPiljByL._AC_UF1000,1000_QL80_.jpg)
Reusable Pocket Hand Warmers, Snap Heat Pack, Hand Warmers Click, Kids Hand Warmers Boil Click Heat Pocket Hand Warmer, Pouch Gel Hand Warmers Long Lasting Warmth for Camping, Outdoor (ABCD) : Amazon.com.au:
![How hot and how long will Hothands and UST (Ultimate Survival Technologies) Hand Warmers last? - YouTube How hot and how long will Hothands and UST (Ultimate Survival Technologies) Hand Warmers last? - YouTube](https://i.ytimg.com/vi/prioyB-4zYw/maxresdefault.jpg)