Question about using a sleeping bag liner for warmth
I keep seeing folks on trail and in reviews talk about adding a liner to their sleeping bag for extra warmth, but I think a lot of people are missing the point. In my experience, a basic silk or cotton liner adds maybe 5 degrees at most, and that's if you're lucky. Last October in the White Mountains, I brought a liner expecting it to save me on a cold night, and I was still freezing in my 20-degree bag. The real benefit, I've found, is keeping your bag clean and adding a bit of comfort, not a major temperature boost. If you need more warmth, you're better off with a quilt on top or a bag with a lower rating. Has anyone else tested this and found the same thing, or am I off base?