Avery Heritage Boonie Hat Marsh Brown is a great cap providing sun and rain protection. Boonie caps originated in the military to help soldiers keep the sun out of their eyes and the rain off of their heads. Features include 8 oz waxed cotton weather and abrasion resistant construction. Wide brim for maximum sun and rain protection. Classic military design adapted for hunting. Large fits hat size - 7 1/4 - 7 3/8 X-Large fits hat size - 7 1/2 - 7 5/8