These hats are sized small/medium and large/extra large with an inner elastic hatband that expands and adjusts the fit. The brims are deliberately broad to keep the rain off the back of the neck and can be rolled up in front for a bit of a kick.
Finely woven and lightweight coated cotton, nylon, or waterproof wool fabrics are chosen for the rainhat line. The cotton fabrics are then coated on the roll with a matte apparel laminate that makes them waterproof while retaining their breathability and lightweight appeal.
See for an idea of the Flamingo color.
*Click image for a closer view of the pattern.