What is the Double Sleeping Bag
A sleeping bag is a protective “bag” that people use to sleep. His prototype is a blanket that can be closed with a zipper or the like, and it functions as a substitute when people can’t carry a full bed. Its original purpose was to keep warm and insulate. At the same time, it is also somewhat windproof, waterproof (and snow) and avoids exposure. The vast majority of sleeping bags on the market are marked by a comfort temperature and an extreme temperature, which is a range of temperatures, with maximum and minimum, at which the user sleeps throughout the night. The maximum comfortable temperature refers to the heat that feels hot in the sleeping bag but not a lot of sweat. It is generally defined as the sleeping bag zipper is open, the arms are placed outside, the sleeping bag head is not tightened, etc.
Information about Double Sleeping Bag
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. The heat generated by different individuals and situations varies. All sleeping bag temperature scale systems are based on a standard. The human body, but such a standard human body basically does not exist. A sleeping human body has about 75-100 watts of thermal power, which is converted to about 47-55 watts per square meter according to the surface area of the human body. The energy produced by metabolism is very complex and is related to age, gender and even the amount of fat under the body, but in general, a healthy young man will always produce far more body heat than old men and women. The feeling of cold is related to age and experience, with novice climbers generally feeling colder than experienced climbers. People who often work outdoors feel warmer in cold environments than those who often work in offices.