Camping in minus 20C
Simple question with no doubt a complex answer.
If you put a minus 10C sleeping bag inside a minus 10C sleeping bag does that make a minus 20C sleeping bag?
I'm thinking it can't be that simple. Obviously the increased insulation from 2 bags would be better that 1, but would it really keep the heat in with double the cold ?
Has anyone done it? (It's my guess if it didn't work you won't answer )
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Regards Tim
Learning my craft for the big stuff, it won't be long now and it's not that far anyway
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