The issue I having trouble wrapping my mind around is this.
If the temps are single digits or below , or even 20’s with the wind blowing ; I’m afraid I’ll be cold while moving wearing only a aero wool base , and a core heavyweight hoodie .
Isn’t the wind gonna cut right through me ?
I would think the atom and the likes of would be a static piece . I’m I wrong on my thinking.

So I guess what I’m thinking is I need a mid to light insulating active layer , and then when stationary throw on something like the LLP over everything.

Have I got this all wrong ?