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Discussion Starter · #1 ·
a few years ago my life was transformed when I we did the AT. I realized the value of ultra light backpacking! this has influenced me in boating and back country outings. I usually do one or two extreme trips a winter where I will go up to around 12,000 to 13,000 feet and camp when it is below freezing using a bivy sack. (i try to find some shelter in rock outcrops or snow to add to the protection.

so here is my dilemma. not wanting to take too much weight, yet not freeze my ***** off.

I am trying to find out if there is any research on temp ratings for doubling up sleeping bags. I am trying to find a lighter weight system.

I have been using a zero degree bag for a while in a bivy sack, but was wondering if doubling up on two 35 degree bags would do better. ( last time I did this it was -20 with out windchill. froze my butt off but no harm was done to any other appendages)

what are your thoughts. I am really, really limited on finances. so buying new gear is kinda our of the question. (because if i could i would want to buy a Arc Expedition quilt)

so thanks for any feedback!
also i am trying to make a light weight sil tepee tent for added protection any recommendations on that would also be great!
 

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Discussion Starter · #12 ·
SO my theory is that you want to trap air in, while allowing perspiration to leave. (I am not a big fan of vapor barriers for sleeping systems) I have several bags that I have accumulated over the years. my zero degree bag is a brute! I am trying to do some long distance hiking in "fun" conditions and trying to reduce the weight as much as possible. in that trying to multi-function my gear!
I always take a camp Jacket, usually a 800 fill down moonstone, and fleece bibs to sleep in. I also have an exped dreamwalker sleeping bag that doubles a a very warm vest at camp! I have been using it for a liner in really cold conditions. My reason to try to double up on the bag is to create more air entrapment with less bulk. that was my thinking on using two lighter bags. both my summer bags would weigh in at around 2 to 2.5 pounds and compress a lot more than my zero bag.

Randaddy, dude Golite makes some amazing gear. I just got a golite caddy Synthetic jacket and it is awesome. it is a little heavier with all the zippers but I love that you don't have to take it off when hiking because of the great ventilation. I just wish it had a hood and thumb holes in the sleeves to retain more heat.

I am going to look into the poncho liner. see if that will make any difference.

I have to admit it becomes addicting when you start to cut weight out of a pack. it is a very freeing thing, but expensive with all the cool gear out there.
 
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