>>1904838>>1905029>What bag liner gives a purported 25 extra degrees?OP fell for the marketing meme, a bag liner can only give +25 degrees if you're using it with a shitty 60F sleeping bag, but that's because adding something to nothing is better than nothing
when paired with a 3 season bag and used in the winter you're only going to get +5 degrees at most, better leave it at home and pack a liquid fuel hand warmer instead
