The main reference to determine the temperature of the sleeping bags is the European standard EN 13537, resulting from laboratory tests applied on mannequins simulating the body of man and woman. For this, it was considered the standard man (25 years, 1.73 tall and 73 kg) and woman (25 years, 1.60 high and 60 kg). And weather conditions also were normal, that is, without excessive components.
The main temperature set by European Standards and that interests us directly are the following:
►Comfort temperature: minimum in which a standard woman can sleep comfortably.
►Temperature limit or transition temperature: minimum in which a standard man can sleep comfortably.
►Extreme temperature: temperature range in which a standard woman feel a strong sensation of cold. There is risk of damage to health, including hypothermia.
Clear that laboratory tests are not dogmatic, but serve as guidance and reference; so we must understand them to avoid gaining inappropriate products. This means that, if we go to the Serra do Cipó and later we’ll be in the Andes, certainly we can’t use the same sleeping bag, because these are regions whose temperatures are totally different!
But in Practice, As Is the European Standard?
We know that standardization is an important reference for sleeping bags reviewed on sleepingbagsexpo.com. However, local and specific climatic factors, body mass, and psychological conditions of adaptation should be confronted with the standardization, because we know that in natural environments, not always the man/environment conditions are stable.
In practice, standardization in indicates that, at the time of acquisition of a sleeping bag, we should look for a product that gives us a margin of safety as the minimum temperature in the region which we use it. The secure parameter is base on comfort temperature for women; and the temperature limit for men. According to the European standard, this difference as the genre revolves around 5 degrees celsius and is due to uneven body weight characteristic of each genre. This means that, under normal conditions, the women tend to feel colder than men.
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