EINSKEYWide Brim Sun Hat, UPF 50+ UV Protection Waterproof Packable Bucket Hat for Men & Women, Fishing Hiking Beach Garden

Does the brim of the hat flap around in the wind or stay in place if, for instance, you are driving around on a fast lawn mower in a breeze?

How's the sun protection with the mesh on the side?

Is there any size adjustment?

How do I get rid of this crease from the hat being folded in the package?