Originally Posted by
2Trees
That's a good question... I have been testing and re-testing different ideas of using "stuffable" natural insulation. I certainly have come to find that using a 20 F down bag with an outer layer of natural insulation, I can really get into the sub-zero temps and be completely warm. The natural insulation needs to loft around 2"-3" thick and this extra layer really does the trick.
The main concern with the natural insulation approach is... finding and using dry natural materials in the winter. It would seem that you would have to collect the material and have on hand to use prior to the winter months. And you have to pack whatever natural insulation you want to bring along with you. My thought is, what if I could somehow wear my stuffable SS as a "stuffed-poncho". This would alleviate the need to carry it in my pack and offer me a warm barrier against the cold. Plus, I would have another use for the SS other than just an undercover. Another thought is, it would also be nice to be able to remove and re-stuff my custom SS very quickly.
So, I'm working on a stuffable & wearable WPB bivy sack/ hammock sock/ anorak that I would "stuff" quickly prior to using for winter trips. I will be able to stuff this anorak/ hammock sock/ bivy sack with individual, pre-filled bags of natural insulation. In the cold temps, I will be able wear it as my outer jacket while hiking and then use it as a bivy sack/ hammock sock around my hammock and Exped Wallcreeper when sleeping.
Hoping to sew a prototype here soon and do some testing with the design. I will certainly post a review and pics.
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