Mission Enduracool Classic Cooling Headband, High Vis Coral 80% Polyester/20% Nylon Proprietary protection from the sun Wicks away sweat and promotes moisture circulation When wet, stays cool for hours; when dry, soft and absorbent Chemical-free; machine washable To activate cooling technology soak headband, wring out and snap three times; to reactivate, simply re-soak and re-snap