Next up the WP layer. Here is the Redledge Thunder Light parka.
This is an older model in "taupe" (yeah looks a lot like OD green to me too). This worn right over base layer, such L1 or L2 layer, and underneath smock.
Here's a pic of the inside. Notice single layer, no liner, etc. and taped seams.
Here's the trou, They run small so size up. I usually wear medium trou and these older trou are XL. Hopefully they have adjusted this by now. These fit nicely under regular cammies or L5 soft shell trou.