Straw hat

Charley Chase wearing an American straw hat (specifically a boater), 1926.
A traditional Ukrainian straw hat.
An ad for various styles of straw hats
A straw cone hat worn by a Japanese buddhist monk

A straw hat is a wide-brimmed hat that is woven out of straw or straw-like synthetic materials. Straw hats are a type of sun hat designed to shade the head and face from direct sunlight, but are also used in fashion as a decorative element or a uniform.