Click the disc for instant warmth. When your HotPoc cools down, boil it to reset it and enjoy reusable heat up to 100 times.
Click to activate
heat in 3 seconds
How HotPoc Works | Click, Warm Up, Reuse
Safe and Easy to Use
Enjoy Heat
for 30 to 60 minutes
Boil 5 minutes
to reset
Click to reuse
up to 100 times
anatomy of a hotpoc:
4. The Metal Disc
This simple, yet essential piece can be considered the heart of the HotPoc. It is literally a floating piece of metal inside the pouch with one crucial role. When it is bent or “clicked”, its interaction with the liquid triggers the heat reaction for you to enjoy.
ALL ABOUT
The Science Behind The Heat
Let’s take a stroll down memory lane, all the way back to your high school chemistry class.
The Key Ingredient
Every HotPoc hand warmer contains water mixed with a very salty ingredient called sodium acetate. In order to dissolve as much sodium acetate as possible, the solution was heated during the manufacturing process. Remember this last part, it will be important later on.
From Crystal Clear to Opaque
When the metal disc is “clicked” or bent, microscopic pieces of metal are released, which creates “nucleation sites”. When in contact with these sites, the liquid changes from liquid to solid, a process called crystallization.
« Hot in here »
As the rapper Nelly would say, “it’s getting hot in here”.Up to 57°C, to be precise. That’s because the stored heat in the salty liquid is released (as mentioned in step 1). A savvy scientist would call this an “exothermic reaction”, but we prefer the term “eco-friendly magic”.
Yeah, Science !
The heat will last between 30 to 60 minutes, depending on the size of your HotPoc. Once the magic is over, the process needs to be reversed before you can reuse it. Simply reset the HotPoc by placing it in boiling water for approximately five minutes. The crystals will absorb the heat and liquefy. For additional satisfaction, you can shout “Yeah, Science!” like Jesse from Breaking Bad.
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