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I doubt there is an "industry standard" of what each of those mean, but in general I have noticed: Sleeping bag liners tend to be narrower, and come in mummy-bag and regular: mummy bag style ten...
Answer
I doubt there is an "industry standard" of what each of those mean, but in general I have noticed: Sleeping bag liners tend to be narrower, and come in mummy-bag and regular: mummy bag style ten...