monotaro Neck ice 22°C high performance

This neck cooler uses PCM cooling material developed by NASA to protect astronauts from sudden temperature changes. The contact area at the neck is flat, making it easier to feel the cold sensation. The elongated shape also reduces pressure on the neck. This is a high-performance type that has a thicker neck part that easily melts so that the cooling time lasts longer. Just leave it in a room below 22°C and it will start to freeze. This is a stylish product with our original design, which has a window that allows you to check the condition inside and a design print. It will freeze if you soak it in running or cold water or store it in the refrigerator. When cooled, the water-soluble PCM (cooling material) recrystallizes, so it can be used repeatedly. Once it freezes, it will stay cool around your neck for about 4 hours (however, this will vary depending on the usage environment, temperature, and product liquid temperature).Since it does not use any electrical appliances, there is no need for troublesome charging, making it economical.
As a measure against 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 22°C. *If the product is damaged or deformed, discontinue use. *This product is not an ice pack. *Due to the material of the neck tube, it may be sticky when you first start using it, so rinse it off with water. *Please note that long-term storage in the freezer (more than 3 months) or storage at high temperatures of 60°C or higher will accelerate product deterioration. *There may be dents when it solidifies, but if some of the dissolved gas in the PCM material turns into bubbles and solidifies as it is, it may dent, but this is not a defect. If you are concerned, shake the product well and then solidify it to resolve the problem. *When the temperature drops, such as in winter, white powder may appear on the surface, but this does not affect the quality. It will become colorless if you apply warm air from a hair dryer. It can also be cleaned by washing it with water.