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david long
Guest
Western Mountaineering or Big Agnes......can't go wrong with either one.
I ended up giving the Zirkel a 35 degree comfort rating and would not recommend it for a "do all" september bag. I'm sure you could get away with it, but you'll need to wear clothing to bed to keep warm sometimes.
Chem E are you asking about it? Or have you used it? And recommend it?