I'm looking to make a lightweight summer UQ from IX. My plan is to do a single layer with an M50 outer shell. That should do the trick when it's really hot out then as temps drop I can add an insert to boost the rating. I'm not looking to take it to freezing temps, I have a down UQ for that. It's just for warmer weather when it doesn't make sense to carry a 20oz UQ.
My questions are, does that seem like a good idea? Has anyone tried using just one layer?
What is the weight per sq yd? The only info I found was on a site that said a single layer would keep a person warm down to some ridiculously low temp so I have to question the accuracy of their info.
What is the clo/oz?
How necessary is it to have an outer shell?
Is there something better that I could use instead of IX?
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