Pros: Made from sustainable wool, doesn't smell, doesn't itch
Cons: not too many colours to choose from, costs more than a tank of gas!
We some of this Icebreaker gear a season ago and one of us (names unmetioned) decided to try going a year without washing it. Well, we all survived and the piece of clothing did not smell at all! We can't say enough about this stuff except for that you can only really afford to buy one piece a year because it is a little pricey. However, awesome performance and great tempurature control.
Check more out at: www.icebreaker.com