Features1Polyester Material: The cooling fan vest is made of polyester material, thin and breathable, not only for cooling, but also for sun protection, not easy to damage, long service life. 23 Gear Adjustable: The brushless fan within the vest has three levels of adjustable wind speed to meet your different needs, low noise, can work continuously. 3Easy Installation: Brushless fan with rotating thread combination, more convenient to install. With larger edge chuck area, making it not easy to fall off. 4Portable Power Supply: Fan voltage DC 5V, portable power supply through the charging bank (not including the charging bank), for outdoor use. 5Multiple Applications: Light and stress free, can be used for high temperature environment, outdoor and indoor, travel, etc., make you more comfortable and cool in this hot summer!SpecificationItem Type: Cooling Fan VestMaterial: PolyesterWeight: Approx. 483g/17.0ozColor: GreyFan Gear: 3 gearsFan Voltage: DC 5VPackage List1 xCooling Fan Vest2 x Fan(Random)1 xPowerSupplyLine