I'm a big fan of ExOfficio's products. They feel good, they wear well and they hold up to abuse. The Exo Dri series of shirts are roughly a 6:1 polyester:cotton blend, but they feel like a cotton shirt. I use these shirts as my travel undershirts - all polyester or nylon shirts make me feel gross after a day's use. The Exo Dri shirts feel great and wash and dry quickly.

If you're a traveler, you're smart to invest in a few pairs of these shirts. They totally rock and will help you reduce the size of your suitcase.