Don’t run with the equivalent of a sponge on your head! Try our cotton-free Runner’s Hat! Not a trace of cotton in our running cap, so it won’t turn into a sponge. Mesh sides. CoolMax sweatband. Machine washable. Adjustable strap. Black fabric under the visor, so it deadens the light that would otherwise reflect into your eyes. This lightweight running cap offers fantastic sun protection, so you can keep a cool head while running.