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Question:

What are some alternatives to a sleeping bag?

What are some alternatives to a sleeping bag?

Answer:

Check out a Haven Down Blanket made by Therm-a-rest, rated 20 degrees F., with some modification it can be turned into a true blanketIt packs down to about the size of a one liter water bottle and weighs about 24 ounces.
Yes and this technology has been out for 10 years! I've seen this at dentist offices and now with larger items such as with artificial limbs, and a few weeks ago was announced they are making houses and other large items in 3D with this method.

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