EN 13537
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EN 13537 (or EN13537) is a European standard designed to standardize the temperature ratings on sleeping bags manufactured and/or sold in Europe. It went into effect on January 1, 2005.
The standard measures four temperature ratings:
- Upper Limit - the temperature at which a standard man can sleep without excessive perspiration. It is established with the hood and zippers open and with the arms outside of the bag.
- Comfort - the temperature at which a standard women can expect to sleep comfortably in a relaxed position.
- Lower Limit - the temperature at which a standard man can sleep for eight hours in a curled position without waking.
- Extreme - the minimum temperature at which a standard woman can remain for six hours without risk of death from hypothermia (though frostbite is still possible).
There are a number of disputes about the efficacy of EN 13537. See the external links section for more information.
[edit] External links
- Information from Ferrino, an Italian manufacturer of outdoor products
- Information from Escape 2, a British retailer of outdoor products
- Information from Nanok, a Norwegian manufacturer of sleeping bags
- Information for consumers, retailers and manufacturers by the European Outdoor Group
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