This summer jacket is made of high-quality material and has a dual fan design for effective cooling. It can prevent heat stroke, reduce skin problems caused by sweating, and improve work efficiency. The jacket has three airflow modes and a turbo mode, is easy to use, and can be connected to any power bank, computer or AC adapter through USB charging. Suitable for outdoor sports and workers in hot environments. Features 1. Comfortable to Wear: Made of high quality material, it is comfortable to wear. Not only does a cooling jackets evaporate sweat quickly, it also reduces skin problems caused by sweating. What's more, it can prevent heat stroke and improve work efficiency. 2. Dual Fan Design: The cooling fan has two fan units at the waist position of the clothes. Connect the power bank with USB and the clothes start to work. It has three airflow modes as well as a turbo mode so you can adjust the airflow to your working conditions. 3. Easy to Use: The cooling fan jackets is easy to handle and safe. It's machine washable, don't forget to remove the fan assembly before cleaning. 4. Speed Control and USB Charging: Built-in USB rechargeable fans, this suit has 3 adjustable wind speeds. With a USB power cable, it can be easily connected to any power bank, computer, AC adapter, etc. 5. Wide Application: As summer clothing and heat-resistant clothing, it is very suitable for workers who are working in the wild and hot areas. Suitable for kitchen cooks, tour guides, farmers or warehouse workers and others who need to work in high temperature environments. It can also be used for outdoor sportswear. 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 Using time: 19 hours Package Include: 1 x Air Conditioned Jackets 2 x Fan 1 x USB Charger