Product DNA What's It Do? Our goal was to make the perfect hat for runners. It's form-fitting, lightweight, wicks sweat, and its special allover-vented material is incredibly breathable. The Fundamentals UA Free Fit features a pre-curved visor & unstructured front panels that conform to your head for a sleek, low profile fit ArmourVent™ Technology delivers true breathability in a light, stretchy, durable & fast-drying fabric Reflective taping & logo for increased visibility & safety on low-light runs Adjustable hook & loop closure 100% Polyester Imported