I found the Lifesystems Reusable Hand Warmers very easy to use, with the instructions clearly outlined on both the packaging and the pouches' exterior.
To activate, you simply locate the small silver disc inside the pouch and click it or bend it. The impact is almost instantaneous – I could visually see the reaction as the liquid began to crystalise, the effect spreading across the surface like ice across a pond as the contents solidified inside. Additionally, Lifesystems recommend you massage the pouch for ten seconds once the initial reaction has occurred to help ensure an even distribution across the surface.
After use, the Lifesystems Reusable Hand Warmers can be reactivated to enable repeat use. While the process of recharging was relatively straightforward, it was an extra step that required some time and could be off-putting for some. It could also be easy to forget, so I would recommend that you do this straight away so they’re ready for the next time you need them.
To recharge, you simply add the pouches to a saucepan of boiling water and simmer until the filling returns to a clear liquid. This process took around ten minutes, with some additional time at the end to allow the pouches to cool. You mustn’t take them out too soon, or the filling will simply reharden.
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How warm are the Lifesystems Reusable Hand Warmers?
The heat generated from the Lifesystems Reusable Hand Warmers is impressive, with the whole pouch heating up evenly to a comfortable yet substantial temperature within just a few seconds.
Compared to the Hot Hands Instant Hand Warmers which I also tested, the Lifesystems pouches are larger in size – around 9cm square. As they go slightly rigid once activated, I found they were too big to pop inside my fingerless gloves, however, they made a very welcome addition to the pocket of my winter coat. They also felt lovely to simply hold between my palms – ideal for those who spend their Sunday mornings spectating outdoor sports.
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How long do the Lifesystems Reusable Hand Warmers stay hot?