Well, I hate to be a wise guy (no, that’s not true…), but I will quote a line from the Integral Designs Web site. This is in reference to the aforementioned Endurance Bivy. Ahem: Conduit SL Bivy “You ...

The Observer Plus, by Carinthia European Cold Weather Specialists, is a simple, intuitive shelter that is less a bivy bag, and more of a tent. It's easy to use, versatile and very well constructed.

Serious campers, hikers and long-distance athletes know that one of the best ways to stay fit and healthy as you move through the wilderness is by getting a good night’s sleep. A bivy sack (“bivy” is ...

It s an atmospheric thing. Your bag s insulation means that while you re warm and toasty inside (at least, I assume you are), the shell of the bag is at ambient temperature probably 35 degrees or so.