Item Type: Air Conditioned Clothes Material: Nylon Fan Levels: 3 Levels Package List 1 x Cooling Fan Jacket 2 x Fan 1 x Power Supply Line Products are shipped without power bank 13 Levels Adjustable: The fan uses 3 levels adjustable to meet your different needs, low noise, and can work continuously. 2Working Principle: Through the waist high wind of high speed fan, so that a large amount of air outside the body along the body surfaces parallel flows, so as to quickly evaporate sweat and reduce the body surfaces temperature. 3Multipurpose: Body cooling vest with long sleeved design, can be used not only for cooling, but also for sun protection. 4Applicable Scenes: The fan uses a combination of rotating threads, more convenient installation, multi scene universal, high heat environment, outdoor environment, indoor environment, outdoor adventure, travel. 5Nylon Material: Air conditioned jacket is made of nylon material, the fabric is light and thin, cool and breathable, not easy to damage, can be used for a long time.