Lightweight hats, such as panamas, are a type of hat made from lightweight materials like straw or cotton. They are often associated with tropical climates and are popular for their breathability and sun protection. Panamas, in particular, are a type of hat originating from Panama that have a wide brim and a crown that is pinched in the middle. They are often made from toquilla straw, a type of palm leaf found in Central and South America.