What is the sleeping bag for?
Hiking and camping have become popular, and the demand for outdoor equipment has gradually increased. Sleeping bags have become a commercial product, and production businesses have begun to label sleeping bags so that customers can choose according to their needs when buying.
A sleeping bag is a bag used when sleeping.
The function of the sleeping bag is only to keep the heat lost as little as possible, while the human body in the sleeping bag continuously generates heat to keep warm. Different individuals and situations produce different heat. All sleeping bag temperature scale systems are based on a standard Human body, but such a standard human body basically does not exist.
In order to establish the temperature level of sleeping bags, the prototypes of sleeping bags before commercial production are tested outdoors, and the testers are often people who often live outdoors, such as soldiers, mountain guides, etc. They need to test in the wild for several weeks, and then Provide the manufacturer’s opinions on the comfortable temperature and extreme temperature of the sleeping bag.