A favorite design of military forces, the Ultra light Boonie features a well-stitched 3-1/2 in wide brim, as well as a black nylon mesh crown that provides a nice contrast and superb ventilation. With an adjustable chin cord and strap at the base of the crown, the Boonie is sure to stay in place during the toughest tasks. Lined with black fabric, this one-size-fits-all hat is washable and as durable as you'll ever need.