Love ExOfficio underwear! Just finally got latest from REI - wine colored (already have two that are black). But I'm wondering if just three pairs is enough for a month-long or more trip - should I have get a fourth pair?
In addition to traditional long underwear, I also like long sleeved, sheer, thin insulayer. I call it my "second skin". If I wear this under a regular long-sleeved shirt, it's like wearing a sweatshirt or sweater in terms of warmth. If I wear it underneath a sweatshirt or sweater, particularly along with a long sleeved shirt or long-underwear, it's like wearing a winter coat! Mine is 100% polyester, but if you have the money, try silk. Very easy to rinse out.