“FYI, Walmart now sells a duck down bag that's likely good to 40F for $70 online. Weighs < 2 lbs.”

Last month I was backpacking in Capitol Reef National Park with brother and his sons; My two nephews got this bag. They’re warm teenagers. Well it got down to 40F and they froze. They were on a nice Thermarest pad. I would put this bag more safely at 50F.

-Barry
-The mountains were made for Tevas