Piggsy Hi sheryl, I just got back from just a few days in Panama and just about evenroye except me checked huge amount so luggage. I packed one Ex Officio long sleeve shirt, one sleeveless, and one long pair of pants that zips off into shorts. (Plus their underwear.) They felt totally comfortable in the 90+ degree weather and 100% humidity. And so easy to wash in my room before dinner and they were dry by the time I returned.