Perfect Accessory: Experience a revolutionary design with our hat fan, ensuring you stay cool and safe during summer's heat without any harm. The perfect accessory for sunny days. Multiple Purposes: Experience multifunctional use with our hat fan. It not only cools down instantly but also absorbs moisture and wicks away sweat, ensuring you stay cool under the sun. Adjustable Design: Expertly designed to fit head circumferences of 56-58 cm, this hat features an adjustable fan, providing a perfect and refreshing breeze for most adult users. Convenient to Carry: Effortlessly carry your breeze. USB-equipped for convenient charging, ensuring a refreshing gust is always at hand. Enjoy the cool breeze on your face on a hot day. High-quality Material: Experience the fusion of breathable cotton and ABS material in our hat fan, ensuring a no-static design that's comfortable to wear while providing high-quality durability.