Item Type: Men Heated VestMaterial: Polyester FiberColor: BlueApplicable: elderly daily work, overtime and cold protection, female protection, street work, winter travel, outdoor dutySize:S/160: Length: 63cm / 24.8in, Chest: 98cm / 38.6in, Shoulder: 39.1cm / 15.4in, Collar Height: 7.5cm / 3.0inM/166: Length: 65cm / 25.6in, Chest: 102cm / 40.2in, Shoulder: 40.3cm / 15.9in, Collar Height: 7.5cm / 3.0inL/170: Length: 67cm / 26.4in, Chest: 106cm / 41.7in, Shoulder: 41.5cm / 16.3in, Collar Height: 7.5cm / 3.0inXL/175: Length: 69cm / 27.2in, Chest: 110cm / 43.3in, Shoulder: 42.7cm / 16.8in, Collar Height: 7.5cm / 3.0in2XL/180: Length: 71cm / 28.0in, Chest: 114cm / 44.9in, Shoulder: 43.9cm / 17.3in, Collar Height: 7.5cm / 3.0in3XL/185: Length: 73cm / 28.7in, Chest: 118cm / 46.5in, Shoulder: 45.1cm / 17.8in, Collar Height: 7.5cm / 3.0in4XL/190: Length: 77cm / 30.3in, Chest: 122cm / 48.0in, Shoulder: 46.3cm / 18.2in, Collar Height: 7.5cm / 3.0in 1Fast Heating: 3 seconds quick heating, warmth without waiting, delicate and full of heating, long press three seconds to turn on. 23 Gears Adjustment: This heating vest has 3 speeds to adjust the temperature at will, 30 blue light for energy saving gear, 40 white light for comfort gear, 50 red light for warm gear. 34 Zones Heating: Humanized heating parts design, for the neck and back vulnerable to cold, infrared heat, no harmful radiation, adopts delicate carbon fiber heating wire. 4Washable: This electric vest can be washed by hand or machine, unplug the mobile power supply and take off the intelligent thermostat as you like. 5Lightweight Comfortable: The heating vest is made of light heat insulation material, which can help you keep warm easily, and you don't need to wear heavy winter clothes all winter. 6Ideal for Outdoor Activities: This heated vest is ideal for outdoor activities, hunting, skiing, fishing, motorcycle, camping, hiking, office, etc.