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Another idea which I think I will try since I have some extra 2.5 climashield laying around.

Run 1" wide strips at about 6"-8" O.C. between 2 layers of insultex.
Will probably glue it with McNett...

Trying to maintain a tiny air space between three layers of Insultex sounds like a PIA. Too much and you get air circulation. Too little and you get no air benefit.
Hang to loose and you get an air...

Thats a wide spread.
From single digits to 50dF for a 3 layer.

I am a warm sleeper so I would think it should carry me to 30dF ??

Is it as sweaty as a CCF pad in a double layer ??

I am...

Like what are the layer below good for temp wise ??

Consider a 5MM silk cover which weighs about .5oz per yard (very thin) and an appropriately rated warm TQ.

1 layer, 2 layer, 3 layer etc.
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