The Boonie Hat or Booney Hat is a wide-brimmed sun hat usually used by the military in hot tropical climates. It is similar in design to a barrel hat, but with a stiffer brim. The later Boonie was called “Hat, Sun” or “Hat, Sun, Hot Weather”, which is still the name of this type of hat. They come in a variety of patterns, such as cotton ripstop or nylon blends. This boonie hat comes with an adjustable chin drawstring to hold the hat in place for a secure fit on windy days. One size fits most adults. Unique brim design to protect you from the sun and sand. Wide brim and screened side vents are designed to keep you cool in the hot sun and during combat games.