This hat has a drawstring to adjust the size between 6 7/8 (Small) and 7 1/8 (Medium)

and the sun's heat can cause dehydration

and looks good too

This California Hat Company style is a braided straw floppy sun hat with a polka-dot ribbon bow trim and tails

As a final point

Who Ced - Loughborough Raffia Fedora Color:Natural This hat has a drawstringStraight from the new "Who Ced" line featuring Cedric The Entertainer, the Henschel Loughborough Raffia Fedora is a stylish and unique hat as made famous by Josh Kaufman, winner of "The Voice". This Fedora features a stingy brim meausring just under 1. 5", and a 4" Diamond Crown. The inside of the hat is lined with purple and features the "Who Ced" logo as well as a soft cotton sweatband.