Anybody know if there's such thing as a sleeping bag that uses synthetic insulation around the head and down insulation around the body? I often find I can stay the warmest at night when I can completely enclose myself in a sleeping bag, but don't like to breathe into down because it tends to get moist and collapse. Also, in certain conditions, even if I have my face sticking out the face hole, the down in the baffle just below my face tends to get moist and collapse from moisture from my breathing. Using a bivy, too, I often have my head and the head of my sleeping bag sticking out, exposed to dew, while the body of the sleeping bag doesn't get so moist. Having synthetic in the head area would mitigate these problems I've experienced, I think.
Would I have to frankenstein a down bag with a synthetic bag if I want something like this, or is there a gear maker who makes something this monstrous?
