Specification BrandTENGOOGenderMen and WomenFace cloth100 nylonInner cloth100 polyesterFiller100 polyesterHeating zone2Regional locationNeck backGear adjustment3 modesHigh temperature gear45℃ RedLow temperature gear35℃ BlueEnergy saving gear25℃ GreenPower supply interfaceUSBSuitable Power BankAllFeatures Intelligent USB heating vest 25℃ 35℃ 45℃ 3 modes temperature can be adjusted Silicone waterproof temperature control switch using imported chips can be machine washed Carbon fiber heating wire infrared heating stable performance environmental protection andenergy saving safe and harmless soft and comfortable 1 minutes fast heating more warmth Many scenes can be used home camping hiking outdoor etc Size Chart CM SizeM L XL2XL 3XLLength65 67 69 71 73Chest104108112116120Shoulder width4041 242 443 644 8Instructions 1 Take out the USB data cable and plug it in power bank Press the switch for 3 seconds 2 Tap the switch to adjust the temperature mode 3 Press the switch for 3 seconds to turn off the heating 4 Please turn off the power immediately if your clothes get wet Washing 1 Can be washed by hand and machine Wash it gently 2 Take out the power bank and close the pocket zip before washing 3 After washing hang to air dry 4 Please ensure that your clothes are completely dry before use Package included 1 x Electric Heated VestNote not included power bank