ArmourVent Technology delivers ultimate breathability in a light, stretchy, durable & fast-drying fabric Material wicks sweat & dries really fast Iso-Chill sweatband & front panel lining helps disperse body heat, making it feel cool to the touch Adjustable back closure Style #: 1361528 54% Nylon/31% Polyester/15% Elastane Imported UA Free Fit: pre-curved visor & unstructured front conforms to your head for a sleek, low profile fit