Frank Bee Classic Military Style Boonie Hats are functional & fashionable and made to government specifications. These Boonie Hats feature 4 screened side vents, loops woven into the sides for leaves and branches, and an adjustable chin strap and are made from a poly/cotton material. 65% Polyester/35% Cotton Rip-Stop MultiCam Fabric Is U.S. Made And Licensed Through Crye Industries