I've had one of these bags for about 10 years now. Got the one
rated 0 degrees. Sleeps hot in 40 degree weather and real
comfortable in the mid 20's. Good thing is the dual zippers so
you can vent it when you start to get toasty. Not sure if the
fill is the same, somehow I'm thinking Holofil(?). Mostly use
it hunting in the fall, but have used it packing, I just dont
zip it up.