UA Storm technology repels water without compromising breathability. Durable woven fabric with UPF 50+ protects the skin from the sun's harmful rays. Laser perforation on the side panels for better breathability. The Iso-Chill fabric dissipates body heat and gives you a pleasant cooling feeling. Adjustable snapback fastening. Detail of the string. Water-repellent treatment without fluorine. Odor control technology minimizes odor.