Does any one here use vests, down or synthetic, to boost your sleep system, and if so, is it very helpful?
I layer my BMW PG parka and pants in a Speer Pea Pod over a hammock, as well as with other sleep systems. This gets me at least an additional 20*F top warmth in my hammock.
I also have a Patagonia down vest. It weighs 9 0z, and has an impressive 3.75" of total dual layer loft, at least in the thickest areas. But, sewn through, not baffled. It has a good seal around the neck and waist and pretty good at the arms. I can wear it under my 14 oz PG parka without compressing it's loft( or at least not much), or over the parka, or drape it on top of me around my neck and shoulders where it will help deal with drafts when I have the Pod set up for a breathing hole. Or, put down below in the pod to boost warmth there, or several other possible combinations.
At least that seams to be my theory of how it would or could work. Does any one hear have experience using vests for making a bag or quilt warmer, and if so, how helpful was it? Do you feel that it is a lot of warmth for the weight, or not so much?