REI has the Hat for 25 bones, you can wait for their sale to get 30% off. Campmor and Big5 also carry it

http://www.rei.com/product/778057/columbia-omni-shade-bora-bora-booney-hat
it comes in grey, beige, and white colors, while the bright white reflects the most light, it doesn't blend in with the outdoors colors, I have been happy with the beige for many years.
wide brim covers the back of the neck, and enough front shade to cover my adam's apple. it is a one-size fits all, with an adjustable bungee. it feels weird at first, but when you find the right tension for you, its good. (too tight is too much)
the forehead part is breathable mesh. I wash it in the shower with soap.
I did modify a little bit by adding a long plastic stiff line on the outter brim, so it doesn't turn into an old ladies floppy hat, and now its more taut like a park ranger's hat.
been happy with the same hat for 5 years