100% CottonATTENTION!!!! Purchase this item ONLY from ZhangyongST. Do not buy from other sellers who have hijacked this listing, they sell fake item!!!Forrest costume.Adjustbale strip on the back of the hat, can fit for most people.100% COTTON MOST AUTHENTIC profession stich and emborried DO NOT COMPARE TO OTHER LOW PRICE ITEMATTENTION!!!! Our items have the particular washing mark, if you receive the hat without it, it must be FAKE PRODUCT!!! Please report it to amazon and claim for refund!!