1、Fast and 9 Heating Zones: This vest can fast heat in 3 seconds, no need to wait for warmth, and press for 3 seconds to open. And it has 9 heating zones that is humanized heating part designed, targeted at the neck and back parts easy to get cold. 2、3 Gears: This heating waistcoat has three gear temperature adjustment that 30 ℃ blue light energy saving gear, 40 ℃ white light comfortable gear, 50 ℃ red light warm gear. 3、Infrared Heating and Polyester: The vest uses infrared heating, no harmful radiation, and adopts imported carbon fiber heating wire, and it is made of light heat insulation materials. It can help you keep warm easily. 4、Washable: This electric heating jacket can be washed by hand or machine. Unplug the mobile power supply and remove the intelligent thermostat then you can wash as you like. 5、Widely Applicable: This heated vest is ideal for outdoor activities, hunting, skiing, fishing, motorcycle, camping, hiking, office, etc. Item Type: Heated Vest Material: Polyester Color: Blue Applicable to: Elderly daily work, overtime and cold protection, street work, winter travel, outdoor duty Size: M/165: Length: 65cm/25.6in, bust: 102cm/40.2in, shoulder: 40.3cm/15.9in L/170: Length: 67cm/26.4in, bust: 106cm/41.7in, shoulder: 41.5cm/16.3in XL/175: Length: 69cm/27.2in, bust: 110cm/43.3in, shoulder: 42.7cm/16.8in 2XL/180: Length: 71cm/28.0in, bust: 114cm/44.9in, shoulder: 43.9cm/17.3in 3XL/185: Length: 73cm/28.7in, bust: 118cm/46.5in, shoulder: 45.1cm/17.8in 4XL/190: Length: 77cm/30.3in, bust: 122cm/48.0in, shoulder: 46.3cm/18.2in Collar Height: 7.5cm/3.0in 1 x Heated Vest