100% Cotton ??MATERIAL & SIZE??–Main 100% cotton,one size:cap circumstance:55-59.5cm/21.6??23.4.Adjustable metal buckle back closure,lightweight,durable & smooth fitted most unisex head. ??FEATURES??–Comfy & breathable,have eyelets for ventilation.Keeps face/neck skin from sun damage.Best accessorizing pair with clothes.Suit in spring/summer/autumn(fall)/winter. ??OUTDOOR ACTIVITIES??–Black/Navy/Beige/Grey/ArmyGreen solid color,fit for biking/hiking/camping other sports.Can be used as holiday/birthday gifts to friends,family and loved ones. ??STORAGE & WASHING METHOD??–Please store in a dry and ventilated place.Recommend hand wash,best to use a neutral detergent with cold water,dry it flat. ??CUSTOMER SERVICE??–We take customer service seriously,if you are unsatisfied with our hats,you can get a full refund.Please contact us directly,we will solve problems for you.