Careful and supervised use for children, the elderly or disabled.
Consult a physician before use in case of diabetes, fragile or sensitive skin, circulatory problems, paralysis or damaged nerves, arthritis, rheumatoid, in the pregnant women or in case of doubts.
Do not use on a frostbitten or desensitized skin. Do not use while sleeping.
Do not use at the same time when applying external analgesics or with other heating devices.

The heating process activates upon contact with the air:
1. Remove the heater from the package and shake it 5-6 times to activate the heating process.
2. To ensure an optimal heating temperature, leave the process to activate in the open air for 10 mins before beginning outdoor activities, ideally for an ambient environment of approximately 20°C.
3. Once you can feel the heat, place the warmer in a confined space (jacket pocket, gloves, etc.)