Rothco’s Campaign Hat, aka the drill sergeant hat, is crafted from sturdy brown felt, embodying its iconic look and heritage. The wide brimmed military hat is made of 100% brown wool felt in a traditional 4-dent style, with a 6.5 inch height and a 3-inch wide stiff brim that helps shield your eyes from the sun. The round brown hat features an adjustable chinstrap with a metal buckle and 2 rivets at the brim for secure fastening. The 4 incorporated air vents provide additional airflow and circulation.