100% Cotton ?MATERIAL & SIZE?–100% cotton.2 size:56-58cm/22-22.8(L);58-60/22.8-23.6(XL).Adjustable metal buckle back closure,lightweight,durable & smooth fitted most head. ?FEATURES?–Comfy & breathable,have eyelets for ventilation.Keeps face/neck skin from sun damage.Best accessorizing pair with clothes.Black, Army, Beige, Navy, Gray 5 classic colors to choose. ?OUTDOOR ACTIVITIES?–Suit in spring, summer, autumn, winter.Fit for biking, hiking, camping, fishing and 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.