Originally Posted by zukiguy
I've got an older version of the Adventure Medical thermolite bivy. I've been kicking around giving it a try in this fashion. I just figure it will be be a real pain to try and wriggle into the bivy then get under my quilt (better than trying to get into another bag).
When you got up in the morning did your body heat dry out your thermals pretty quickly or did you stay clammy for quite a while??
I find it easy to get into the VBL. It is shaped like a mummy bag, cut closely to my body dimensions so there isn't much spare material. I keep it balled up inside the sleeping bag, which is pulled pea-pod style around the hammock. When I get in the bag, I leave the bag unzipped and then reach down toward the foot of the bag and pull out the VBL. I stick my feet inside the opening, and then draw it up over my legs. When it reaches my waist, i arch my back upward and draw it up to my chest. It stops at my chin. THere is a super light drawstring on it.
In the morning, when I get out of the bag, I slip right into my boots and quickly march around camp in just my smartwool longjohn tops and bottoms, and they evaporate really quickly. This gets chilly. When I'm cold enough that it's time to pull on my pants and jacket -- just a couple minutes -- the top and bottom are dry enough that they easily keep evaporating inside my pants and jacket, and with the jacket zipped open a bit I don't think much ends up getting stuck in my down jacket's down. It would probably be more efficient to sleep naked inside the VPL, jump out of the sleeping bag and quickly into clothes that had been kept inside the mummy bag, and thus warmed up. I will try that next time.
I am AMAZED at how toasty warm you feel when inside the humid environment of the VBL. The perception is so much warmer than just being in the bag without the VBL. Very toasty.