mle3794915 wrote an answer about Black Diamond Big Wall Hooped Bivy Bag on November 27, 2011
Jared, this may sound strange, but try some neoprene socks and if that doesn't work, try a full on vapor barrier liner. The water bottle trick above won't work because that will just create more condensation by making you even hotter. The problem isn't a temperature problem, it is a condensation problem that then translates into a temperature problem. If you have a down bag, this will only get worse the more nights you camp. Hope this helps.