Operating / heating instructions
1. Remove the warmer from its packaging and shake it 5/6 times to activate the heating process.
2. Wait 10 minutes, as THE WARMER MUST BE VERY WARM before placing it in a confined space (pocket, glove, etc.).
3. Ideally, activate it in an ambient environment of 20°C (at home, in the car, etc.).
4. At 0°C or above 2000m altitude, blow on it several times. The warmth and humidity of your breath will accelerate the start-up of the reaction.
OPERATING PRINCIPLE
A heater is a mixture of activated charcoal powder and iron, which produces heat by oxidizing the iron.
The reaction stops:
_ When there is no more activated charcoal. The reaction is definitive after about 5 to 6 hours.
_ In an airtight environment (in a rubber boot or with neoprene bicycle overshoes).
If air is added to the heater, the reaction restarts.
Restrictions
HAND warmers are intended exclusively for use on the hands and must not be used on other parts of the body.
Precautions
Cautious and supervised use for children, the elderly or the disabled.
Consult a doctor before use in cases of diabetes, fragile or sensitive skin, circulatory problems, paralysis or nerve damage, arthritis, rheumatoid arthritis, in pregnant women or if in doubt.
Do not use on frostbite or desensitized skin.
Do not use while sleeping.
Do not use at the same time as external analgesics or other heating devices.
Good to know
The exothermic reaction starts on the production lines:
_ The mixture is activated and then checked at 100%
_ Once the check has been carried out and validated, the pair of hand-heaters is inserted into the plastic bag, stopping the reaction and therefore the production of heat. This will resume when the bag is opened, with the oxygen and humidity in the air.
WHAT SHOULD I DO IF MY HEATER STOPS HEATING AFTER 1 HOUR? OR IF IT DOESN'T HEAT UP ENOUGH?
This means that the reaction has been stifled by a lack of air. You'll need to take the warmer out, give it some air, knead or blow on it to restart the heating process. You can then put it back in your glove or pouch.
BORDERLINE CASES
The heater doesn't work:
_ If there isn't enough air around the heater: enclosed in neoprene, for example.
_ If conditions are extreme: in very cold weather, the heater provides heat in addition to the operating T°, but unfortunately if the T° is really too low, it struggles to heat up.
_ If altitude exceeds 3000m, the lack of oxygen limits the reaction.
Single-use product.
The exothermic reaction consumes the activated carbon and oxidizes the iron. Once the fuel has been consumed, the reaction is complete and the powder becomes hard.
