Unisex Nike AeroBill Legacy91 Golf Hat is powered by Nike AeroBill technology to help keep you dry and cool. Its fabric features 4-way stretch for a comfortable fit. - Nike AeroBill technology combines lightweight construction with sweat-wicking fabric. - Dri-FIT technology helps keep you dry and comfortable. - Laser-perforated side panels enhance ventilation. - Terry sweatband is soft and absorbent. - Raised silicone Swoosh design trademark is featured on the front. - 70% NYLON, 24% POLYESTER, 6% SPANDEX