The unique cooling system uses moisture from the towel to draw the sweat away from your skin to keep you cool instantly. Hyper-evaporative breathable mesh material makes it easy to activate the high quality cooling towel. The towel stays chilled for up to 3 hours (depending on conditions). No chemicals are used in the making of the cooling towels. It’s perfect for sports fans into golf, swimming, football, workout, gym and fitness, also works for fever or headache therapy, heatstroke prevention, sunscreen protection, cooling while absorbing.