- Longlasting Cooling Experience: The inner lining uses physical cooling PCM technology to deliver a sustained cooling effect, helping you stay mentally alert. Safe, comfortable, and effective in varied environments. - Up to 2 Hours of Cooling: Provides cooling for up to two hours during outdoor or indoor tasks that demand focus and endurance. - Broad Compatibility: Ergonomic, contoured design fits a wide range of head sizes and works with most headwear for secure, comfortable wear. - Comfort and Materials: PCM core with a soft, skin-friendly breathable lining; durable, easy to clean and maintain. - Size and Fit: One-size-fits-most ergonomic design for a secure, comfortable feel. - Practical Use Scenarios: Cycling in hot weather; camping or fishing in sunny conditions; outdoor work or sports where sustained cooling is beneficial.