Khaki Boonie Cover - Military Tan Boonie Hat - Sun Hat - Made in USA Khaki Boonie Cover Made in USA to Military Specifications This Mil-Spec Boonie Hat is made from a durable cotton ripstop material that protects you from the sun. The wide brim blocks sunlight from your eyes and the material keeps you cool on hot days. There are branch loops made of a tough nylon webbing along the crown for durability. There are also bellowed drain holes on the crown for ventilation and a breathable interior. A leather keeper holds the hat in place when you sweat or are in motion and the adjustable chin cord allows for easy size customization. It also lets the hat be taken off and carried around the neck. Features:4 Screened Side Vents50/50 Nylon and Cotton RipStopAdjustable Chin Strap For Secure ComfortHot Weather, Type II HatBrim Length: 2.5″ InchesBranch Loops Around Hat For Camouflage (Leaves & Branches) Sizing Chart: Head Size Hat Size Head Circumference Small 7 21.7”-22” Medium 7 ¼ 22.4”-22.8” Large 7 ½ 23.2”-23.6” Extra Large 7 ¾ 24”-24.4”