The Nike AeroBill Legacy91 Golf Cap is powered by Nike AeroBill technology, which helps to keep you cool and dry. The moisture-wicking properties, help to remove perspiration from the body and allow you to be fully focused on your game. The laser-perforated side panels, help to further enhance ventilation. The fabrics used also feature a 4-way stretch construction for increased comfortability. The cap also features a raised silicone swoosh design.