Features 1. Comfortable to Wear: Made of high-quality material, it is comfortable to wear. A cooling jacket helps evaporate sweat quickly and reduces skin discomfort caused by sweating. It can help prevent heat-related fatigue and improve comfort during work. 2. Dual Fan Design: The cooling jacket features two fan units positioned at the waist area. Connect to a power bank via USB to activate the cooling function. It offers three airflow settings and a turbo mode, allowing you to adjust the airflow based on your environment. 3. Easy to Use: The cooling jacket is simple to operate and safe. It is machine washable—make sure to remove the fan units before washing. 4. Speed Control and USB Charging: Equipped with built-in USB rechargeable fans, the jacket provides three adjustable wind speeds. The USB cable allows connection to any standard power source such as a power bank, computer, or AC adapter. 5. Wide Application: Designed as summer wear and heat-resistant apparel, it is ideal for individuals working outdoors or in hot environments. Suitable for kitchen staff, tour guides, farmers, warehouse workers, and others in high-temperature workplaces. Can also be used for outdoor sports activities. Specification Material: Chemical fiber blend Color: White, Yellow, Blue, Grey Size: M, L, XL, 2XL, 3XL, 4XL Weight: 280 g, 290 g, 300 g, 310 g, 320 g, 330 g Battery Capacity: 1000 mAH Power: 5 V Usage Time: 19 hours Package Include: 1 x Cooling Jacket 2 x Fan Units 1 x USB Charging Cable