Nitori Cooling Neck Tube Beafort M ● Cooling absorbs body heat just by wearing it around your neck, providing a comfortable cool-down and releasing the heat that remains in your body. ● Naturally freezes in environments below 28°C. Freezes quickly when placed in a refrigerator or freezer. ● Can be used repeatedly, cycling through freezing and melting. ● For outdoor activities and watching festivals ● Smart and lightweight design ● For heatstroke prevention ● For cool-down in the office or during commutes ■ Thickness: 28mm ■ Neck circumference: 33cm ■ Composition/Contents 　Body contents: PCM (Phase Change Material) 　Body outer: TPU (Thermoplastic Polyurethane Resin) ■ Approximate freezing time ・ In the freezer or cooler box: Approximately 20 minutes ・ In cold water: Approximately 45 minutes ■ Cooling duration (at room temperature of 30°C and surface temperature of 33°C): 150 minutes