NIKE Mens Aerobill TW Elite Running Hat Nike AeroBill technology combines lightweight construction with sweat-wicking fabric. Reflective Swoosh design trademark is printed on the front panel. Perforated, self-adjust closure offers a snug, customizable fit. One size fits most 100% POLYESTER You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!