The 3-IN-1 Cooler is a bandanna with polymer crystals sewn inside to provide hours of cooling relief. Soak the 3-IN-1 cooler in cold water for 10 minutes to activate the cooling crystals and wear as a headband, necktie or skull cap to maximize cooling during hot days and activities. Can be worn 3 different ways and re-used hundreds of times. Provides hours of cooling relief.