Cooling collar. An ice collar in the form of a ring is put on the neck, cooling blood vessels, which lowers the overall body temperature. Neck cooling helps prevent overheating, heat stroke, headache, and weakness.The collar is made using a material with special thermoregulating properties that helps maintain a comfortable temperature.Phase-change materials are substances that absorb and release thermal energy when changing phase. When a material melts, it transitions from a solid phase to a liquid phase. During phase transition, many materials are capable of absorbing a significant amount of thermal energy. The PCM in this collar freezes at 28 degrees. When melting at this temperature, it absorbs a large amount of heat and does not warm up until it completely transitions to a liquid state. The collar maintains a pleasant temperature for an extended period without over-cooling or overheating, providing comfortable wearing throughout the day.Cooling time: 15-20 minutes in the freezer or refrigerator, ice water or cold water about 20 minutes!The collar can be used for 60 to 120 minutes at an outdoor temperature of 25 to 40°C.The collar can be used for golf, fishing, basketball, cycling, hiking, and any other outdoor activities. Suitable for men and women. Made for the internal Japanese market.
