New Zealand's best selling hat in the United States. The "Optimum" is more than a hat, it's gear for the head. The Fly Fisher style allows max. airflow out, while not allowing water in. It comes with a solar neck shade, four covered vent holes, flotation, hidden pocket, double wind chin cords, fly and hook headband, and is machine washable. Made out of a poly-cotton material with a water resistant application applied, allowing greater breathability. New Zealand's perfect all season sun shade hat.