A. Solar panels can drive fans in sunlight: Solar-powered baseball caps can make fans rotate in sunlight. Keep your face cool in summer. No batteries required, just place the sun hat in strong sunlight. It is environmentally friendly and cost-saving. B. Comfortable and cool in summer: The golf cap is equipped with a mini fan to cool your face. The solar fan can cool your face in the sun, and the unique hook and loop closure design on the solar panel makes it easy to adjust the size according to your needs. C. Fashionable design: Suitable for hot summer, outdoor activities, cycling, hiking, walking, golf, baseball, travel, fishing, daily life, etc. D. Material: The baseball cap is made of polyester cotton, plastic, and solar-powered material. It is durable, breathable, comfortable, and lightweight. It is also anti-static, moisture-wicking, comfortable, and non-irritating. E. Solar-powered fan: The baseball cap has good shading, and there is a mini fan on the front of the brim. No battery or electricity is needed to generate solar energy. Only when the sun shines will the fan automatically turn on. Then the small fan will automatically stop working indoors or in the dark. F. After-sales service: If you are not satisfied with the cap, or the fan cannot rotate and does not work in the sun, or the cap does not work during use, please contact us immediately. We will offer a 30-day guarantee and reissue your hat or refund the full amount of this order. We are ready to provide service and products.