monotaro Neck ice 28°C

Made with PCM material developed to protect astronauts from sudden temperature changes, it's not too cold and can be easily reused anywhere. Simply place it in a room below 28°C and it will begin to freeze, maintaining a comfortable 28°C when worn. It's not too cold, making it safe for delicate skin. It won't condense due to sudden temperature changes, so your clothes won't get wet, keeping you comfortable. It will freeze when placed under running or cold water, or stored in the refrigerator. Once frozen, it will keep your neck cool for approximately two hours. It's an economical heatstroke prevention product that requires no electricity.
To cool the neck and prevent heatstroke
*Do not use for any purpose other than its intended purpose. *Cooling time and duration may vary depending on the environment. *It will not cool in environments above 28°C. *Discontinue use if the product is damaged or deformed. *Do not use near sharp objects or fire. It may tear. *If you accidentally swallow the contents or come into contact with them and experience any abnormalities, consult a doctor. *Do not eat or put the contents in your mouth. *This product is not an ice pack, but a cooling neck tube. *Due to the material of the neck tube, it may be sticky when you start using it, so please rinse it off with water. *Due to the surface drying during storage, small particles (powder) may appear. If you are concerned, rinse it off with water before using.