Originally Posted by Bradley
The down bag will compress . . . so if that is all you have . . .
the rating will be lost.
Put it into a second bag if you can . . . and it will help loads.
Sleeping on down does not work.
Synth bags are best for in hammocks. IMO
Sleeping on down works if you have something else under you to provide the bottom insulation. In this case his Exped down mat. Sleeping on this down works because it is tucked away inside the inflatable mat so doesnt get compressed. I think with the exped and the the bag you will get chilly at 10 degrees. Wear extra layers and use the hot water bottle. You have your bailout plan if necessary.