Enhanced Cooling Performance: Utilizes PCM Phase Change Material for natural temperature control, inspired by astronaut protection technology. Heat-resistant TPU ensures durability and stability, resisting quick melting or freezing. Experience continuous cooling comfort in hot conditions. Versatile Hat Compatibility: Designed as a universal hat pad suitable for various headwear styles such as cycling helmets, baseball caps, and fisherman hats. Enjoy a touch of coolness wherever you go, enhancing your outdoor activities with a refreshing cooling sensation. Convenient Usage Instructions: Simply insert the hat pad into your preferred headwear, wear it as usual, and refrigerate for 10 minutes to optimize the cooling effect. Experience improved comfort and cooler temperatures during outdoor sports or leisure activities. Eco-Friendly Reusability: This hat pad offers an eco-conscious cooling solution that is reusable, economical, and environmentally friendly. After use, easily clean the pad by direct scrubbing without causing skin irritation. Enjoy softness and skin-friendly cooling benefits. Innovative Outdoor Cooling Experience: Embrace a new level of outdoor comfort with this innovative hat pad featuring natural crystallization at 28 Degrees Celsius for consistent cooling. Elevate your outdoor adventures with a practical and refreshing cooling companion. Introducing the cooling pad PCM natural temperature control material, a revolutionary product designed with a special material used to protect astronauts. Crafted with heat-resistant TPU, this innovative pad ensures durability and long-lasting cooling effects. Simply insert the pad into your hat, refrigerate for 10 minutes, and experience enhanced comfort and coolness. Ideal for various headwear such as cycling helmets, baseball caps, and fisherman hats, this universal pad offers a natural crystallization process at 28 Degrees Celsius for continuous cooling. Perfect for hot summer days, it provides a refreshing sensation during outdoor activities, elevating your cooling experience. Not only is this hat pad cool and reusable, but it is also cost-effective and eco-friendly. After use, simply wash the pad for repeated use. Its soft texture ensures a gentle feel on the skin, making it a must-have accessory for all your outdoor adventures. Say goodbye to overheating and hello to a new level of cooling comfort with the cooling pad PCM! Item Name: Cooling Pad Material: PCM Phase Change Material Type/Use: Heatstroke Prevention And Cooling Applicable: Helmet Pads, Peaked Caps Features: Summer Heatstroke Prevention, PCM Quick Cooling, Portable Size Details: L: 21cm/8.27", W: 17cm/6.69", H: 1cm/0.39" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Cooling Pad