I will be using this in along with my Eddie Bauer Kara Koram 20 degree down bag when I thru-hike the A.T. this year. Just tested this combo in 20 degrees and it was really warm! I would say the liner adds about 10 degrees to your bag and helps keeps it clean! Super soft and comfortable.
This review was written in the old system and had content requirements that are different than reviews written today.