1. Comfort and Breathability: Made from elastic and breathable material, this helmet insert ensures comfort during use and adapts to various types of hats and helmets. The design allows for versatile application without compromising airflow, guaranteeing a comfortable fit. 2. LongLasting Freshness Experience: Thanks to innovative PCM technology, this insert provides an extended refreshing effect, keeping the head cool in prolonged use across different environments. It ensures comfort without sacrificing safety or functionality. 3. Reliable Temperature Control: This innovative hard hat insert meets cooling demands with extended cooling properties, maintaining a refreshing sensation for up to two hours to enhance user experience in hot environments. Designed specifically for those exposed to temperatures. 4. Easy to Use: It offers an improved experience for individuals engaged in activities such as cycling, camping, fishing, and other outdoor leisure pursuits.