Sitka Incinerator layering?

[Aces11]

What do you guy wear under the incinerator jacket and bibs for layers when it gets down to the single digits and lower?

 

[DakotaGuy]

Heavy sweatpants instead of jeans. Sitka heavyweight bottoms, ambient hoody, carhartt long sleeve

 

[Beagle1]

Two wool base layers, 200 and 300 weight. Down mid layers. Down balaclava over a First Lite Tundra balaclava. If your core is still not warm enough a Pnuma heated vest.