1. ** Ventilation Design**: Featuring elastic and breathable properties, this insert ensures air circulation and easily adapts to various types of hats or helmets. for long workdays or outdoor sports, it keeps your head cool and comfortable while protecting you from demanding conditions. 2. **Advanced Physical Cooling Technology**: The helmet insert with PCM technology provides prolonged cooling for the head, enhancing comfort during extended use while maintaining effectiveness and safety under various conditions. 3. **Reliable Temperature Control**: Thanks to its extended cooling properties, this innovative hard helmet insert meets cooling demands, maintaining a refreshing feel for up to two hours to improve user experience in hot environments. Designed specifically for those exposed to temperatures, it is an ideal option for both outdoor and indoor tasks where heat can be exhausting. 4. **Wide Range of Applications**: This product enhances comfort during outdoor activities such as cycling, camping, and fishing. It combines practicality and versatility to ensure performance in various adventures while maintaining a strong focus on user comfort.