Men Heated Vest Smart USB Electric Vest Winter Thermal Heating Vest 9 Zones Heating Black M Item Type: Heated Vest Material: Polyester Fiber Color: Black Applicable: elderly daily work, overtime and cold protection, female protection, street work, winter travel, outdoor duty Size: M/166: Length: 65cm / 25.6in, Chest: 102cm / 40.2in, Shoulder: 40.3cm / 15.9in, Collar Height: 7.5cm / 3.0in L/170: Length: 67cm / 26.4in, Chest: 106cm / 41.7in, Shoulder: 41.5cm / 16.3in, Collar Height: 7.5cm / 3.0in XL/175: Length: 69cm / 27.2in, Chest: 110cm / 43.3in, Shoulder: 42.7cm / 16.8in, Collar Height: 7.5cm / 3.0in 2XL/180: Length: 71cm / 28.0in, Chest: 114cm / 44.9in, Shoulder: 43.9cm / 17.3in, Collar Height: 7.5cm / 3.0in 3XL/185: Length: 73cm / 28.7in, Chest: 118cm / 46.5in, Shoulder: 45.1cm / 17.8in, Collar Height: 7.5cm / 3.0in 4XL/190: Length: 77cm / 30.3in, Chest: 122cm / 48.0in, Shoulder: 46.3cm / 18.2in, Collar Height: 7.5cm / 3.0in