Long-lasting cooling: The cooling is achieved through physical cooling technology, delivering a durable cooling effect that keeps the head refreshed over extended wear. Suitable for long use in different environments without compromising safety or function. Breathable and elastic: Made from stretchable, air-permeable material for high comfort. Adapts flexibly to different hats and helmets and helps prevent pressure points for versatile use without discomfort. Optimized wearing comfort: The cooling element is contoured to the head for a seamless fit, ensuring high comfort and easy handling even after hours of use. Versatile for outdoor and daily use: Improves comfort for outdoor enthusiasts during activities such as cycling, camping, and fishing, with practical handling for everyday life. Use scenarios: Cycling, Camping, Fishing; also convenient for daily outdoor activities and errands.