Free shipping from CHF 100
Quality for over 20 years
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Air-activated hand warmers by The HEAT Company – no power, no batteries, ready in minutes.
The XL version lasts a full day without a swap
No battery, no charging – just air
Iron powder, activated carbon, salt and water – nothing else
A few grams – for jacket pocket, glove or backpack
Both hand warmers are built the same way and work identically. The difference is run time, and it comes down to one question: how long are you outside in one stretch?
The standard 12-hour hand warmer covers a ski day, a hike or a shift outdoors. Open it in the morning and it lasts until evening. For most uses it is enough, and it is the cheaper of the two.
The 24-hour XL is for anything longer, or where swapping is a problem. On a hunting stand you do not want to be rustling packaging at dusk. On a multi-day trip, every gram you do not carry twice counts. And if you simply hate being cold, take the XL – it never stops too early.
The price difference is a few centimes. If in doubt, take the XL.
All hand warmers come from The HEAT Company. Inside there is iron powder, activated carbon, salt and water. When you open the airtight pack, oxygen reaches the contents and the iron oxidises – the same process as rusting, only much faster. That reaction produces the heat. A short shake speeds up the start.
This explains two quirks. First, an opened hand warmer cannot be stopped, but it can be slowed – seal it in an airtight bag and the reaction slows down. Second, inside a tight jacket pocket it runs cooler than in open air, because less oxygen reaches it. That is physics, not a fault.
Hand warmers belong in a jacket pocket, a glove or a backpack – not directly against the skin. Unlike heat patches they have no adhesive side and are not designed for it.
They earn their keep wherever you stand still for long periods: hunting, wildlife photography, watching winter sports, working outdoors. People who keep moving rarely get cold hands. People who wait do.
| Product | Run time | Best for |
|---|---|---|
| Heat Hand Warmer | 12 hours | Ski day, hike, work shift |
| Heat Hand Warmer XL | 24 hours | Hunting stand, multi-day trip, no interruption |
The standard hand warmer lasts 12 hours and the XL version 24 hours. Both give off heat fairly evenly across the whole run time and cool down gradually at the end rather than stopping abruptly.
By air. Open the airtight pack, take the warmer out and shake it briefly – oxygen starts the reaction. It is warm within a few minutes. Only open the pack when you actually need it: the reaction cannot be stopped once started.
The 24-hour XL. Not only for the duration, but because swapping means rustling packaging – exactly what you do not want on a stand at dusk. One warmer that lasts is worth more than two you have to change.
No, they are single-use. Once the iron powder has fully oxidised, the reaction cannot be restarted. You can slow it down though: sealed in an airtight bag the reaction pauses, and the remaining run time is still available later.
No. Hand warmers belong in a jacket pocket, a glove or a backpack. Hours of direct skin contact can cause irritation, because you get used to the steady heat and stop noticing it as too hot. Always keep a layer of fabric in between.
The contents are natural: iron powder, activated carbon, salt and water. They contain no harmful chemicals, are odourless and can be disposed of with normal household waste after use.
12 or 24 hours of heat – free shipping over CHF 100.
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