Description:100% brand new and high quality. Feature:This is an intelligence vest for you.With mobile power storge pocket, easy travel.1 minutes fast heat, dispel cold and keep you warm.Set the temperature you want to respond to a variety of environments.A button to heating, three stall temperature control, intelligent heating.It can be washed by machine and can be washed by hand. Do not wring it by hand.General USB interface power supply, longer service life,anti water splashing and washable.The fashion is warm, comfortable and breathable, and it's a good partner for your winter going out.Sleeveless Vest only, other accessories demo in the picture is not included!How To Use:1.Take out USB plug.2.Plug in removable charger.3.Switch on the removable charger.4.Press the chest temperature control switch for two second.5.Red light flashing,means heating automatic.6.After red light flashes for 5 minutes,then automatic turn to white light,means medium temperature.7.Manual adjustment has three level,red light means hign-temperature heating continuously. White light means medium heating continuously,blue light means low heating continuously.8.Press the chest temperature control switch for two second,lights out and stop heating.Temperature Shift(Manual adjustment)Warm:45 /113(Red Light)Comfort:35 /95(White Light)Energy Saving:25 /77(Blue Light)Washing instructions:1.Take out removable charger.2.Neutral detergent is available and then hand wash.3.Do not force knead or beat.4.After nature air drying can be use. Specifications:Item Type: Sleeveless VestMaterial: PolyesterSize: S/M/L/XL/XXL/XXXL/XXXXL(Chinese Size,follow the size chart to select please)Size: S: Length: 63cm/24.80inch, Bust: 102cm/40.16inch, Shoulder: 39.1cm/15.39inch, Collar: 7.5cm/2.95inch, Fit US Size: 8, Fit EU Size: 50, Fit UK Size: 16-18Size: M: Length: 65cm/25.59inch, Bust: 106cm/41.73inch, Shoulder: 40.3cm/15.87inch, Collar: 7.5cm/2.95inch, Fit US Size: 10, Fit EU Size: 52, Fit UK Size: 20-22Size: L: Length: 67cm/26.38inch, Bust: 110cm/43.31inch, Shoulder: 41.5cm/16.34inch, Collar: 7.5cm/2.95inch, Fit US Size: 10, Fit EU Size: 52, Fit UK Size: 20-22Size: XL: Length: 69cm/27.17inch, Bust: 114cm/44.88inch, Shoulder: 42.7cm/16.81inch, Collar: 7.5cm/2.95inch, Fit US Size: 12, Fit EU Size: 54, Fit UK Size: 24-26Size: XXL: Length: 71cm/27.95inch, Bust: 118cm/46.46inch, Shoulder: 43.9cm/17.28inch, Collar: 7.5cm/2.95inch, Fit US Size: 12, Fit EU Size: 54, Fit UK Size: 24-26Size: XXXL: Length: 73cm/28.74inch, Bust: 122cm/48.03inch, Shoulder: 45.1cm/17.76inch, Collar: 7.5cm/2.95inch, Fit US Size: 14, Fit EU Size: 56, Fit UK Size: 28-30Size: XXXXL: Length: 75cm/29.53inch, Bust: 126cm/49.61inch, Shoulder: 46.3cm/18.23inch, Collar: 7.5cm/2.95inch, Fit US Size: 14, Fit EU Size: 56, Fit UK Size: 28-30Color: Blue, Black(Optional)Power Supply Interface: USBFever Area: BackFunction: Keep warm, Anti water splashing and Prevent coldAge Of Application: Adult MenQuantity: 1 PcWarm prompt:1.Asian people size is 1 or 2 sizes smaller than European and American.2.Please note that low temperature washed,do not bleach and place under the blazing sun for quite a long time.3.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering.4.Because of different monitors and lamplight,the picture may not reflect the actual color of the item,really thank you for your kind understanding!5.If not used for a long time,please do not plug in removable charger.6.Do not use high temperature water or strong acid detergent.7.Forbidden to use electricity for wet clothes,Please turn off the power and stop using if cloth is wet.8.Use time depending on the capacity of removable charge. Package Includes:1 x Sleeveless Vest(without retail package)