I took three of these shirts on a trip to Greece in July 2009. It was very, very hot. I washed the shirts out in the sink and hung them up and they were dry by morning. They pack easily and take up minimal space. I wore them on a trip to the Pacific Northwest this summer. I could roll up the sleeves, or wear them down and wear layers depending on whether I as hiking the Olympics or walking around in Astoria. I like them so much I recently bought two more. Highly recommended.