100% Cotton ?MATERIAL & SIZE?–Main 100% cotton,one size:55-59.5cm/21.6-23.4in.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/coffee solid color,fit for biking/hiking/camping or any 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.