-Summer, 1 person - OR Aurora bivy. For when I don't know that I can use my hammock. Very light and compact, but like most bivvies, a bit claustrophobic. I get the sense too that the bivvy compresses my down bag a bit. I've been cold even at temperatures well above the rating of my sleeping bag when using the bivvy whereas I sleep much more warmly in a tent.
Recent studies shows that some compression of down
INCREASES its r-value or insulation ability, in fact
compressing the down by 25% in loft may be the most
efficient amount.
It works by making the dead air space more dead, kind of
like how thinsulite works.
I always thought I slept warmer in a two bag system when
the down bag was on the inside. Now I may know why.
Previous Topic
Index
