❁⃘*.゜Cool Band ❁⃘*.゜ Brand new, unused Gray, Black This is the "Cool Band Plus," a cooling item worn around the neck. Cool Band™ Plus This item is designed to cool the neck and efficiently cool down body temperature. It uses PCM (Phase Change Material) that naturally freezes and solidifies in environments below 28°C, allowing for repeated use. Cooling effect: It features a moderate coolness that isn't too cold, preventing frostbite and other issues caused by excessive cooling. Cooling method: It can be cooled quickly by placing it in ice water or cold water, and it will begin to solidify even in tap water if the temperature is below 28°C. Please read the profile before purchasing ❁⃘*.゜