I have a fleece sleeping bag I just use as a liner. I don't know about where you live, but for some reason fleece sleeping bags are everywhere in Washington. Cheap too 5$ so I don't bother making any.


You want to make the liner to keep you warmer correct? I sleep in a hammock in the winter and since I use a very bad sleeping bag (it's rated to zero, but really it's bad in 40!) I have to get creative and bring a whole lot of insulation. I would guess you don't sleep in a hammock so you probably won't need to bring as much as me, but here's what I do:

I use a crappy bag (lets say it's a 45 degree bag)
Fleece liner (adds about 10 degrees)
Self-inflating pad
CCF pad for my shoulders
Wear all my winter clothes

It takes all that for me to stay comfortable and warm at 15degrees with a few knots of wind.

Again, I'm in a hammock so my example is different. If you don't want to buy a new sleeping bag it takes a lot of extra pieces of insulation to stay warm.


I didn't really answer your question, but it's fun too share <img src="/forums/images/graemlins/smile.gif" alt="" />