I just ordered some Icebreaker 150 top (long sleeve) and bottoms. I didn't have any next-to-skin wear that wasn't cotton or running clothes.
Should I be taking these as an insulating layer (in my pack) while wearing something like a RR adventure top and pants (in hot weather)?
Wearing them in cool weather and leaving the RR top at home?
How do you guys and gals use your base layers?
