I'm seriously considering sewing a Climashield mummy bag for winter use. The problem is I don't want to have a static hood, the type like every other mummy bag has. I am a side sleeper who frequently tosses and turns during the night and when I turn over in a mummy bag, as most people here are probably familiar with doing, I either have to perform some actrobatics to get the hood oriented right, or I end up breathing into the fabric inside the hood. Neither is really all that fun to do when I'm tired.
The solution, I think, is something like a quilt, in the way you can use a hooded jacket with a hoodless quilt and have an effectively sealed system. Except, for a -5 to 0*F bag, I think it will need to zip up all the way, so I'm not going to make a quilt, strictly speaking.
What I'm not sure about is the bag-to-hood connection for a bag of this rating. Most of the time I will probably be using this with a hooded down jacket, but the rest of the time it will be used with a detachable hood I plan on sewing along with the bag. How can I best design a hoodless bag to "seal up" when using it with a floating hood? Would velcro need to be entered into the equation?
Even regular mummy bags have big puffy draft collars just to keep drafts out of the face hole. Will I need a draft collar? I'm thinking some sort of stiffened collar sticking up beyond the drawcord might be a good idea to act as a sort of external draft flap, but am not sure how this would work in practice. Such a thing might just end up pointing outwards and not being useful at all. Maybe an extra puffy draft collar would do the trick, but where should it be in relation to the top drawcord?