Heating element in the sleeping bag

The sleeping bag has a carbon heating element in the foot area.

When you are exhausted, sick or already cold, your body has difficulty or is unable to warm itself up.

A sleeping bag doesn't generate heat, but merely reflects body heat. To keep the sleeping bag warm in such cases, you can connect a standard power bank to the USB port in the inner pocket. This will heat the sleeping bag. enough to 10 to 20 minutes, after which the sleeping bag stores the temperature.

The heating element is limited to 39 degrees Celsius because this is the optimal temperature: the feet do not start to sweat and do not get cold again due to the moisture.