I should add to my post about Merino wool. One of the great advantages of the undergarments made of this superfine wool is that they do not itch, and they can be worn for many days without getting too stinky. A definite plus, for anyone who has shared tents, kayaks, cabins etc with polypro that has been sweated into for a few days!<br>Here is another link for those of you who want to research the superfine wool articles:<br><br>http://www.everwarm.co.nz/Merino_html/Merino_html_products.htm<br><br>Again, I add a rider; I have no commercial or other ties with the manufacturer.