I'll sleep in vapor barrier tonight at 19 degrees
I will be solo hanging tonight on a local mountain ridge at about 18 to 20 degrees F. My backpack weighs 7.3 pounds loaded with my winter sleep setup and all gear. Nano 7 with 15 degree down bag pulled peapod style around the hammock. Whoppies. Cuben fiber vapor barrier liner custom built for me by zpacks. Blackrock down had. Cuben fiber hammock tarp with doors from zpacks, pitched to the ground with doors shut. I'll hang inside from sundown, reading my Kindle, toasty warm. Smartwool longjohn top and bottoms inside the VPL. As backup, if the temperature would plummet, I could pull my down jacket inside the bag and put it on top of me, between the outside of the VBL and the inside top of the bag as a sort of quilt. Great setup. I feel significantly warmer in a VBL, and if out for more than one day, I'm glad to not have to carry around a pound or more of water weight per day trapped inside my bag.