Features: Our solar fan caps features a back elastic rope that ensures it fit both men and women of its head size, for comfortable wear throughout the entire outdoor. Like our outdoor fishing hat's builting in solar power fan, keep it freshnesses and provide a gentle breezeing to beat heat during outdoor. By utilizing solar energy and USB, the combination of natural energy and technological convenience enhances the outdoor experience. Equipped with a builting in adjustment chip, our solar fan offers three speed setting. The soft fan design is movable and washable, ensuring safety, comfort without compromising functionality. Crafted with soft and breathable fabric, our personal fan sun hat absorbs sweat and effectively disperses heat. Comfortable to wear without feeling troublesome. The builting in high-speed motor ensures stability and quiet cooling effect. Provides extensive protections for your face and neck, for fishermen, gardeners, and anyone seek cooling during extended sun exposure in hot climates. Specifications: Component: Cotton Polyester Color: DarkGray/Green/Black/Khakiness/LightGray Battery Capacity: 500mAh Hat Diameter: Approx. 18.9inch(48cm) Head Circumferences: Approx. 21.65-23.23inch(55-59cm) Package Includes: 1PC Fan Hat 1PC Mask note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.