Cool Neck Band Cool Neck M COOL-HNM 1 piece

This neck cooling material uses PCM, a new cooling material that is a substitute for ice, as it freezes quickly and does not melt easily. Cutting-edge PCM material: PCM (Phase Change Material) is a new material developed by the National Aeronautics and Space Administration (NASA) to protect astronauts from sudden temperature changes. Estimated cooling time: When used outdoors, it will not melt for approximately 90 to 120 minutes and the temperature will be controlled at approximately 28°C. Estimated cooling time: Freeze for about 10 minutes, cool under running water for about 15 minutes, or cool in a car air conditioner for about 25 minutes before using again. The neck contains a large artery, so cooling the neck can cool the blood flowing throughout the body, effectively cooling the entire body and helping to prevent heatstroke. It doesn't condense so it doesn't get wet. It is durable, lightweight and easy to carry. The pleasant cool feeling lasts a long time. Heat stroke prevention color: light blue Dimensions (mm): Inner diameter: 9.5cm Approximate neck circumference: 32-34cm Size: M Inner diameter (cm): 9.5 Neck size (cm): Approx. 32-34 Material/Finish: Surface: Thermoplastic Polyurethane (TPU), Interior: PCM (Phase Change Material) Caution: Store away from direct sunlight, high temperatures and closed spaces. Country of Origin: Korea Code number: 350-7458