The secrets of good sleep!

a Sleeping bag is the main element of equipment of any traveler and its selection is very important and a long-term process that must consider many factors, such as the area of travel and possible weather conditions (temperature, humidity, precipitation, wind, etc.), as well as the peculiarities of his own physical condition and subjective sensations of "cold".
a Sleeping bag is the main element of equipment of any traveler and its selection is very important and a long-term process that must consider many factors, such as the area of travel and possible weather conditions (temperature, humidity, precipitation, wind, etc.), as well as the peculiarities of his own physical condition and subjective sensations of "cold".

in order to help the buyer make the best choice without overpaying for unnecessary grams or property, but when it adequately corresponds to the conditions future travel leading manufacturers conduct independent testing of sleeping bags in the laboratory.

And that manufacturers had fewer opportunities to use his name to justify the inconsistencies of the products with the stated properties, misleading the buyer into confusion, the leading countries of Europe and also the USA and Canada have adopted relevant standards. They are meant to regulate the testing of sleeping bags, to unify the testing process in the laboratory, and also to introduce a single designation for those products that have already been tested.

an Example of this is standard EN13537:2002 "Requirements for sleeping bags". This standard was ratified by the EU countries, including Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland, United Kingdom.

In April 2002, the EN13537 standard was approved at the meeting of the EU Council. In Germany this standard is formally adopted in November 2002, in France in January 2003. By the end of 2003 was adopted by almost all members of the EN13537.

despite the fact that in Russia this standard is not adopted, the company BASK, which is the largest producer of goods for tourism and travel, have already tested a number of their products in compliance with EN 13537, as evidenced by the icon designation CE and EN Tested 13537.

the Standard includes testing with the dummy (height 175 cm, body temperature of +35C), dressed in warm (Power Stretch and socks) lying on an insulating pad. Conditions in a climatic chamber are set artificially (constant wind of 5 m/s, the normal pressure of 750 mm Hg.article, humidity 50%) with the ever dropping temperature. With 20 segments of the body surface of the manikin removed the indicators of power spent on heating, for 30 minutes. For calculating the insulation properties are taken as average values, are then calculated according to models given in the standard EN13537.

Therefore, four indicators are calculated:
the Upper limit of comfort - the highest temperature at which an adult (man) can sleep all night without sweating.
comfort Temperature – the temperature at which a grown man (woman) can sleep all night with the most possible comfort.
the Lower comfort limit – the lowest temperature at which an adult (man) can sleep all night with the most possible comfort.
Temperature extreme is only applicable to women.

Despite the fact that the products are tested so thoroughly, this does not exclude the possibility of a wrong choice. In order to avoid this it is necessary to take into account the peculiarities of its own body, and the operating conditions. In fact, at a sufficiently high temperature, but high humidity, the cold is felt much stronger than at a sufficiently low temperature, and low humidity.

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