SET OF 2 - HyperKewl Evaporative Cooling Sport Cap - Choose your Colors Combined cooling relief and protection from the sun; adjustable hook & loop closure 100% polyester mesh outer with HyperKewl fabric inner, water-repellant nylon liner and hook & loop closure 5 - 10 hours of cooling relief per soaking Athletic Sport Cap style - Will Not Swell or Bulge, Will not become slimy or leak toxic chemicals This listing is for 2 hats - Keep a spare in the car or makes a great gift