http://www.backcountry.com/outdoorgear/Isis-Walkabout-Pant-Womens/ISI0273M.html
Note: The picture provided by Isis (above, in khaki) is not terribly attractive. These pants actually fit very nicely and offer a bit of "drape" without being too loose.
I also really appreciated the two discreet leg pockets for my passport and for extra cash. Here I am wearing the black Isis travel pants at our cooking class in Italy in September 2010. They were very lightweight yet durable, could be "dressed up" to look quite nice for evening, and could be rolled up into capris, which came in handy for the very warm but rainy day in the Cinque Terre (below):
