This is an excellent bag to take backpacking and thru hiking due to the 19oz weight. Combined with a down parka and wool bottoms, I can take the rating down to that of a 20 degree bag. However, compared to other 30 degree bags I think this one sleeps slightly colder. That aside, this is my go to 3 season bag.
This review was written in the old system and had content requirements that are different than reviews written today.