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why don't puffies have empty backs like quilts? I'd like to make something or have someone else make a puffy like this that could be taken off or put while walking, without dropping pack.
in pic rel, the view is from the users backside. the black lines are like elastic straps or something, the arms are detached. the vest portion goes under the pack straps and the arms get attached either onto the straps or onto the vest. you could then add or remvoe your puffy easily if it was in an accessible pocket.