Ice Pad a Summer Cooling Mat for and the Whole Freezes Naturally Below No Batteries Cooling Aid U-COOL BIG, Kids, Pets, Family. 28°C. Required.

- About 20 to 30 minutes in cold or ice water ・About 15 to 20 minutes in the refrigerator ・Air conditioning for about 20 minutes High temperatures can cause the PCM material to melt quickly, so we recommend storing it in the refrigerator before using it outdoors. *This product is not as cold as an ice pack, but provides a moderate cooling sensation at a temperature lower than body temperature. *The required time may vary depending on the outside temperature and humidity. *It is more effective if you chill it in the refrigerator for about 15 minutes before use. *It is more effective if you chill it in the refrigerator for about 15 minutes before use. *The battery life may vary depending on the usage and environment. *If you are out and do not have refrigeration or air conditioning, we recommend cooling it with running tap water. Freezes naturally below 28 degrees!