I really like the feel of this bag, but I think the 20-deg rating is very optimistic. I was wondering if anyone had tried adding additional down to a bag or quilt? Maybe this would be done with small slits in each chamber or pulling and resewing the full edge seam.
Any advise? I don't have sewing machine, so I may have to out source that part. Also where should one get additional down? Can you simply use the fill from an old jacket or nice pillow?
Any input would be great.
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