❁⃘*.゜Cool Band ❁⃘*.゜ Brand new, unused Gray, Black This is the "Cool Band Plus," a cooling neckband. Cool Band™ Plus This item is designed to cool down your body temperature efficiently by cooling your neck. 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 ❁⃘*.゜