Originally Posted by
robow
Question for you that do use a liner, do you feel it lowers the rating of your bag by 10 degrees, i.e. takes a +40 deg F. to a +30 deg F ? I've heard mixed reviews as to whether there really is any insulative value with thin liners. Thanks.
I've used liners in the past, and largely given up on them, in part because they don't really add much insulation (at least in my experience). I've used cotton and silk, and never felt like they provided anything close to the 10 degrees that many people claim. If I'm looking to really stretch my sleeping system (taking my 30 degree quilt close to 0) I'll bring one, otherwise it's useless weight, bulk and expense.
Also, if I'm really looking to stretch my sleep system, one of these
https://www.hammockforums.net/forum/...wn-throw-19-95
that actually adds a pretty decent amount of warmth for just over the weight of a liner.