All good stuff to read. I've used merino wool base layers but do find moisture to be an issue, at least for the tops. As a base layer for the bottoms I have no issue with Merino. My current set of Firstlite is worn out and need of replacement anyway. I think I'll try the aerowool and a Capeline and see what works. Not sure I can really compare what I use for the Rockies in October with the gear used for an eastern treestand. I've found nothing that tests cold gear more than sitting perfectly still in a stand on a breezy cold day in the eastern woods. For that my Cabela's wooltimate pants over kuiu ultra down insulation is quite toasty. I've looked at a similar top combination. The wooltimate is really too heavy for a backpack hunt though.
What are the actual complete layering systems folks are packing for 4-5 days in the Rockies in October?
