Staying warm when glassing

[Formidilosus]

Anything you add changes that 37F for static use and depending how you layer, significantly changes that. Hopefully I’m making sense.

No, it really doesn’t. Doubling up 2x 5oz fill puff jackets is not the same as an equivalent 10oz fill jacket.

Please share your personal experience using these jackets in true cold weather, and how that relates to the CLO numbers you reference.