I'm going on the AT in the Smokies next weekend and the temps on Mt. Leconte have been down to 2*. I am taking a 15* bag.

Does using 2 sleeping bags work?...assuming you don't crush the down and allow it to loft.

I have a montbell 15* and a 40*. The 40* weighs 1lb so it's not like it's a big deal if bringing it will help.

MTS