Start cooling with a strong punch! For leisure and sports; About 40 minutes at room temperature of 86°F (30°C); Contents: Urea, Vitreacy, and Water; How to Use: *This product contains a granular coolant and water bag inside.When you tuck the bladder and then it will start cooling.(1) Place this product on a flat surface, pat the center firmly and tear only the water bladder inside.(2) When the water bag is broken down, the granular coolant dissolves in the water and begins to cool.Cold Retention Time: (1) The estimated cooling time is measured using a static setting at a room temperature of 88°F (30°C).(2) Please note that the cooling time may vary greatly depending on the conditions of use, such as the cold contents and surrounding temperature.