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; it merely reflects body heat. To warm the sleeping bag in such cases, you can connect a standard power bank to the USB port in the inner pocket. This will heat the sleeping bag. Heating is sufficient after 10 to 20 minutes ; after that, the sleeping bag retains 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.