for me this season out in -14ºC I had multi layers of thermal wear and under armour fleece/base layer, then browning hell canyon bib and few hoodie / sweater then a scentlok mid season jacket ( looking to get a late season jacket), 400 gram(toe warmers) or 2000gram insulate irish setters boots based on the amount of snow and wind chill... the biggest game changer for me in the cold this late season was getting a fleece a
hand muff. what a difference and can't wait to use it late season duck hunting .... if really cold throw a hand warmer in it. I like having thin gloves when bow hunting. I also wear less upper body layers walking in 1km-2KM to some spots and get dressed at the tree so I don't sweat .. makes all the difference in the world..