I bought this hat for a planned fishing trip where there was a possibility of rain and cold.  It ended up raining all day.  This hat was perfect.  The wide brim kept the rain away from my face and my head stayed dry and warm all day.  Rain just bounced off this hat and did not soak through the material at all.  We were outside in the rain for over 8 hours.  The ear flaps are great and provided excellent warmth and coverage over my ears.  Sounds are muffled a bit with the ear flaps down so I had to adjust them a little bit so I could still hear others speak clearly.
The others in my group all commented on how nice this hat looked and asked where I got it.  One was my father-in-law and we ended up getting him one for Christmas.
It also folds up nicely and I was able to tuck it away in my jacket pocket when not wearing it.  Great product and I would highly recommend it.