Built-In Solar-Powered Dual Fans --- Enjoy a refreshing breeze anytime with two high-speed mini fans powered by solar energy and USB charging. Three adjustable wind speeds cool your face and neck hands-free-even in intense heatDual Power Options --- Solar + USB --- Go1 green with solar power outdoors or switch to USB charging when indoors. With two 800mAh batteries, you get up to 16 hours of cool airflow per chargeSun & Heat Protection --- Featuring a wide 4.72-inch brim and UV-blocking fabric, this hat effectively shields over 98% of harmful UV rays and 99.99% of infrared and visible light. Waterproof and breathable for all-day comfortAdjustable Fit for All --- Designed with a rear drawstring, this unisex sun hat fits head sizes from 22" to 25" (56â64 cm) and weighs just 4.02 oz (114 g) for a lightweight and comfortable experiencePerfect for All Outdoor Adventures --- Whether you're hiking, fishing, gardening, cycling, or traveling, this cooling hat keeps you cool, dry, and protected. Durable materials, breathable mesh top, and removable, washable fan blades make it ideal for summerPolyamide