When it comes to cold weather sleeping bags, there hasn't been much change aside from using different kinds of filling until now; the Raven is designed to keep you warm in a different way.
Outfitted with heating elements inside, the Raven sleeping bag is capable of heating up to a toasty 20-degrees Celsius to keep you warm all night long. The heating elements are placed within the front and back of the main portion as well as around the feet and the interior of the hood portion.
The Raven cold weather sleeping bag is capable of providing up to 30-hours of heat when set to low and can even be used to charge your smartphone. The sleeping bag is currently funding on Kickstarter where users can pick up a bag with a battery of their choosing at early bird prices.
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