I always wear a merino base layer, Badlands Rise pants (they are almost like fleece). Then I carry in my Cabelas Wooltimate pants. Those things are really warm. If I have to hike pretty far with a stand, I'll only wear a T shirt or a thin long sleeve shirt and attach my jackets, base layers and wool pants to the stand. When I get to my spot, I use my shirt to dry myself off, wait until I cool off, then put on all my clothes. As long as you are dry, you usually stay warm. It only sucks for a little while, you warm up pretty quick hiking. Even when it's 15-20 degrees.