Mens Sun Hat with UV Protection Wide Brim Sun Hats for Men Waterproof Sun Hats for Fishing Hiking Camping

Is the hat still sunproof when the cover is removed?

If it's breezy, will the brim blow up or stay stiff enough to protect your face, neck, and ears from the sun?

Would this fit a 27" head circumferance? Yes, I have a big head :-)

What is the fiber content?