"killer sac" - Review of Outdoor Research Aurora Bivy

i perspire relatively lightly. after a night of light snow, and the storm flap only covering my head (not zipped), i had very little condensation inside the sac come morning. my buddy sleeping in an older sac and of less quality, arose with significant moisture on his sleeping bag, (he sweats a lot) it has easy access and zips well. i appreciate the no see-um bug mesh. it would be nice to have a window in the storm flap to see the stars, snow or whatever. overall, i'm quite pleased with this product, enough that the use of my tent is now limited
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