Use it as a first aid aid for sudden fevers, injuries, heatstroke, etc. Just hit and start cooling immediately. You can cool it whenever you want to use it. Can be used for disaster preparedness supplies such as emergencies, disasters, etc. Can be used for outdoor activities in summer, leisure activities, etc. Uses: For emergency use in outdoor activities and leisure activities such as injuries and heatstroke. (Ingredients) Safety and water (How to Use) (1) This product contains a water bladder, so please place it on a flat surface and firmly tap it on a surface with a water bag (2) Break the water bladder and the chemical inside will dissolve and start to cooling. (3) After use, put it in the freezer to reuse it as an ice pack. (About several times) [Estimated cooling time] About 90 minutes at room temperature of 30 degrees F (time when standing still. Storage/Storage Estimate: Store estimates for about 3 years after purchase, and be sure to check whether the contents are not hardened. Please be careful not to load the product during storage. Storage and Storage Method: Store in a cool place away from direct sunlight. If the product is kept at a high temperature of over 35 degrees F (35 degrees C), the chemicals inside may melt or become solidified. When that happens, the water bag will start to cool up, but the cooling time may be shortened. Please store out of reach of children. Precautions for Use: This product is not grocery or drinking water. Never put it in your mouth. In the event that this product is swallowed, please drink a large amount of water and discard it. If it gets into your eyes, immediately rinse it off with water for 15 minutes. Consult a professional immediately after first aid procedures. In the event that the liquid from the bag breaks onto your clothes or skin, please rinse it thoroughly with water. Please do not tear the outer bag. The temperature will suddenly fall to the freezing point, so when you feel it too cold, please wrap it with a towel or similar product. Especially for infants and those with physical disabilities. After use, please discard it as a non-burning garbage