Effective Sun Protection: Our solar cooling hat is designed to provide you with ultimate sun protection. The brim of the hat offers excellent coverage for your face, shielding you from harmful rays while keeping you cool and comfortable. Innovative Solar Fan Technology: This fan sun hat features a built-in 650 mAh battery solar fan that can be powered by outdoor solar energy or USB charging. With three adjustable wind speeds, you can enjoy a refreshing breeze for 4-8 hours, making it perfect for outdoor activities. Hands-Free Cooling Solution: The upgraded design of this solar fan outdoor cap allows you to wear it comfortably on your head without feeling tired or restricted. The mini fan integrated into the front edge ensures continuous airflow, keeping you cool and relaxed while freeing up your hands. Comfortable and Breathable Construction: Crafted from 85% polyester fiber, this hat offers effective moisture-wicking properties to keep sweat at bay. The waterproof surface and moisture-wicking sweatband enhance comfort, while the mesh layer on top promotes breathability, making it ideal for various outdoor sports and activities. Versatile Outdoor Companion: Suitable for outdoor sports such as golf, hiking, running, cycling, farming, fishing, shopping, beach games, etc. Item Name: Hat Material: Polyester Battery Capacity: 650mAh Wind Speed: 3 Levels of Wind Adjustment Features: Hollow Mesh, Windproof Strap, Sunshade Power Supply Mode: Battery Drive + Solar Drive (Note: You Need to Toggle The Switch When Switching The Drive) Size Details: Head Circumference: 54cm-59cm/21.3"-23.2" (Approx.) Hat Height: 13cm/5.1" (Approx.) Hat Brim: 11cm/4.3" (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 Hat 1 x Fan 1 x USB Charging Cable