- Continuous Cooling Experience: Our ice pack hat insert features innovative P-CM coolant technology that provides cooling without electricity. It effectively keeps temperatures below 28 degrees, delivering a consistent and refreshing sensation for your comfort. - Immediate Thermal Protection: This insert offers instant relief from heat, preventing heat-related discomfort. It is designed to enhance your well-being and mental clarity even in warm conditions, promoting better health performance. - Comfortable and Safe: Made from high-quality, soft TPU material, our ice pack hat liner is gentle on the skin and non-irritating. It ensures comfort during use while also protecting against freezer damage, allowing for safe and effective cooling. - Secure Fit Design: Enjoy a reliable fit with our specially designed ice pack hat liner. It stays securely in place whether you're working out, engaging in outdoor activities, or tackling projects at home, eliminating the worry of slipping. - Practical Use Scenarios: Ideal for athletes needing to cool down after intense workouts, outdoor workers facing heat exposure, or anyone seeking relief during hot summer days. With this ice pack hat insert, you can beat the heat effectively while maintaining comfort and performance in any situation.