UA Storm technology repels water without sacrificing breathability. Ripstop stretch-woven fabric is light & super-durable. UA Siro sweatband gives greater stretch & recovery, an ultra-soft feel & more breathable performance. Adjustable hook & loop strap closure. No top button so you can comfortably wear with headphones or headsets. Embroidered hook & loop front patch logo you can attach your own patch to. UA Free Fit: pre-curved visor & unstructured front conforms to your head for a sleek, low profile fit. 100% Polyester.