Base-layers; broken down
Ok I need some baselayer 101. I need to get new first layer stuff that's warm and lightweight for carry and traveling purposes. I honestly don't know where to start, material wise. I understand you get what you pay for so just throw it all out there! I just bought a new Marmot flatspin jacket and I'm hoping it's warm and lightweight, works like down but no where near as "puffy". I'm all ears....