Features: Creative cooling jackets,come with removable fan that moves clean air along the back and shoulder, sweat evaporates instantaneously that make you feel cooling in hot day. cool vest that manages heat stress. you can feel very comfortable work, avoid heavy sweating and heat strokes 3 Fan speeds setting,evaporative cooling jacket with three air flow modes so you can adjust the air flow to the work conditions. fan support large air volumes. three level of air volumes (strong, medium, and weak).large capacity usb battery can provide a runtime Air condition jacket, fan jacket package is includes fans+ 1 cable+ 1 cool jacket. Cooling fan jacket make from quality materials, it is also a sun protection vest that heat resistant, breathability. light weight for easy to carry, also good for travelling.fan cooling jacket can help you keep cool in hot job site conditions Wearable cool jacket application,suitable for worker, contruction,gardening, hiking, walking, kitchen cook, guide, farmer or warehouse worker, also a great solution for ms people Specifications: Materials:Polyester Color:01,02,03,04 Size:M Length:64.5cm(25.39inch) Sleeve:59cm(23.23inch) Bust:112cm(44.09inch) Size:L Length:66.5cm(26.18inch) Sleeve:60.5cm(23.82inch) Bust:116cm(45.67inch) Size:XL Length:68.5cm(26.97inch) Sleeve:62cm(24.41inch) Bust:120cm(47.24inch) Fan Size:9cm×9cm×2.2cm/3.54×3.54×0.87inches Package Includes: 1Piece Cooling Jackets note: Please allow 1-2cm errors due to manual measurement. Due to the differences betweeen different monitors,the picture may not reflect the actual color of the item.