Originally Posted by
BillyBob58
I'm not familiar with the "thermolite bivy sack". But if it is waterproof/vapor barrier, and preferably also a radiant barrier( reflective), it should work if you can get it around or on top of the HH pad. Don't know about the weight though, no info. OTOH, the $3, 2 0Z Walmart SB works fine, as does a Heatsheet ( a bit nicer and easier to handle and quieter during set up, slightly more cost, about the same weight depending on which Heatsheet you get. As they come in bivy sack models also.
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