Originally Posted By billstephenson
FWIW I use a Coleman Fleece Bag as a liner and it will give you some added warmth. They claim it adds 12⁰ of extra warmth. I don't about that, but it certainly will keep you warmer. It's not very heavy but I don't know what it actually weighs. Certainly more than a silk liner though.

From what I can tell online, it weighs 1.5lbs (680g). That's probably not precise, though. Not bad for the comfort and price.
_________________________
"Without craftsmanship, inspiration is a mere reed shaken in the wind." - Johannes Brahms