[Exquisite craftsmanship] Anti-static, moisture wicking, cool beanie with fan is made of selected excellent cotton and ABS material, carefully finished for breathability and comfort. [Easy to Change Size] Women's fan cap is secured with a unique yoke to keep cool in summer and has an adjustable cap circumference of about 56-58cm/22.04-22.83inch, making it suitable for most people. [Easy to use] Easy to use, soft fan blades for added safety that won't hurt you, peace of mind after the exercise and to cool your face, featuring an adjustable wind for a cool breeze in summer. [Easy to carry] The electric cooling cap is easy to carry and charge, when the power is off , you can still charge the fan with the power bank, equipped with a USB cable and has a rechargeable design. [Unique design] For summer outdoor activities, the electric fan for women is designed with built-in 600mAh 14500 lithium battery. Charging time is about 1-2 hours and using time is about 1-3 hours.