Originally Posted by BillyBob58
BINGO! All theories and previous experience confirmed once again! Now for the final test if you feel like it: weight the NS before and after. Then use it in similar temps sans VB and weigh again.
That might take a little bit of doing. First, I'll need to find a few nights in a row with the same temps. Next, the temps should be well below freezing else the NS might absorb moisture from the air. I'll probably need to wear some heavier layers without the VB as the VB seemed to keep me comfy at 21 in the NS.
I'll see what I can manage here in the next few days, but I think we are in for a warmer spell.