- 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. Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 185 hours.