i wore it to the cayman islands, all week i wore it, sweat in it, suntan lotion from my head in it, sand, and flying into the ocean,(caribbean sea), and pool all week, not worrying about it, i wash your hats all the time, came home and along with my clothes, i washed it twice, and i guess there was too much stuff in the hat to clean and it wouldn't come out, so i ordered a second hat which I'm wearing now to work , all in all its a great, thank you,