Perfect reusable hand warmer and more! It is enough to bend the plate in the middle, and the crystallization process will start immediately, thanks to which the heater will start to give off heat (approx. 50-60 degrees).
The heater cools down in about an hour (depending on the ambient temperature)
To use the heater again, just boil it for about 5-10 minutes so that it takes the form of a gel again. After this procedure, we can bend the plate again in the middle.
An excellent product for amateurs of observing the night sky, for ornithologists, hunters and for anyone who complains about cold hands and feet.
Dimensions 10.5 x 7 cm