Cooling bandanas provide instant and stylish relief from extreme heat conditions using nature's own air conditioner, evaporation. This relief is achieved through soaking the bandana in water for 5-25 minutes, where superabsorbent polymer crystals in the bandana take in up to 400 times their own weight in water, resulting in a cooling effect that lasts for several days! This process can be repeated over and over for a period of 5 to 10 years. In addition, Cooling bandanas are non-toxic and completely bio-degradable.