I took this to a recent trip to Burma, Cambodia and Hong Kong.  I couldn't have done without it.
It is easy to pack, appropriate for all informal occassions and does the job.  I was the most prepared lady on the trip!  It kept the sun off my face and worked great as a rain hat.  My head did not over heat and it fit!  Everyone was impressed with the little pouch for the rain fitting and they were equally impressed with how it looked.
AND it even floats!!!!