Teesar GI Boonie Hat Multitarn 100% Cotton S (54-55cm), M (55-56cm), L (57-58cm), XL (59-60cm), XXL (61-62cm), 3XL (63-64cm) Comfortable and lightweight 4 air vents on both sides of hat. Scrim web strap attached around hat Adjustable chin strap. Wide reinforced brim. Internal map pocket Material: 100% Cotton Ripstop