http://www.rei.com/category/4500001 There is good news for consumers on thermal ratings of the sleeping bag. The EN13537 is an international standard developed to measure how warm a sleeping bag is.
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Sleeping Bag Temperature Ratings Video
http://www.rei.com/category/4500001 There is good news for consumers on thermal ratings of the sleeping bag. The EN13537 is an international standard developed to measure how warm a sleeping bag is.
http://www.rei.com/category/4500001 There is good news for consumers on thermal ratings of the sleeping bag. The EN13537 is an international standard developed to measure how warm a sleeping bag is.