100% washed cotton chino twill. Unstructured, 6-panel. 6 embroidered eyelets. Adjustable strap with hide-away buckle. Head circumference: 19 ¼” - 23 ⅝”Made in the USA. If you're looking for a made in America hat, the Caddie Fit™ is it! It's unstructured with a curved visor and adjustable strap.