Our cooling Jacket are made for laborers who work in hot environments hot weather. The cooling jacket great for keeping cool in the summer!Summer outdoor leisure, sports or work,very effective cooling equipment.▲Features●4 built-in fans, the air naturally circulated in the clothes, causing a nice cooling sensation. ●3 levels of wind speed adjustable.●100% cotton fabric, ,sun protection, breathability, abrasion resistance.●Multiple pockets, making it easy to store power bank and small items. Portable and very convenient!●Connect the USB cable to the power bank, and the clothes will start to work (not including the power bank).●Sun protection and quick dry, comfortable to wear and enjoy outdoor activities easily for hot weather.▲SpecificationFabric: 100% cottonSize: M~4XLPackage: Fan*2; Cable*1; Vest*1▲Note*Does not include power bank.*When washing, the fan and data cable need to be removed, and then it can be machine washed or hand washed.*The Asian size is used, not the Amazon default size, it is recommended to buy one size larger!