Item Type: Heated VestMaterial: Polyester, Carbon Fiber, CottonPower Supply Mode: USB (not included battery)3 Heating Levels: 25-45Size: S: Length: 63cm / 24.8in, Bust: 102cm / 40.2in, Shoulder: 39.1cm / 15.4in, Collar Height: 7.5cm / 3inM: Length: 65cm / 25.6in, Bust: 106cm / 41.7in, Shoulder: 40.3cm / 15.9in, Collar Height: 7.5cm / 3inL: Length: 67cm / 26.4in, Bust: 110cm / 43.3in, Shoulder: 41.5cm / 16.3in, Collar Height: 7.5cm / 3inXL: Length: 69cm / 27.2in, Bust: 114cm / 44.9in, Shoulder: 42.7cm / 16.8in, Collar Height: 7.5cm / 3inXXL: Length: 71cm / 28in, Bust: 118cm / 46.5in, Shoulder: 43.9cm / 17.3in, Collar Height: 7.5cm / 3inXXXL: Length: 73cm / 28.7in, Bust: 122cm / 48in, Shoulder: 45.1cm / 17.8in, Collar Height: 7.5cm / 3inXXXXL: Length: 75cm / 29.5in, Bust: 126cm / 49.6in, Shoulder: 46.3cm / 18.2in, Collar Height: 7.5cm / 3in 13 HEATING LEVELS: The heating vest supports 3 heating levels, can generate heat for neck, back, abdomen, waist and other body parts, promote blood circulation, and relieve muscle tension. 2POWER SUPPLY: 2A or 2.4A USB output, inserted with 10000mAh battery pack (not included), can keep heating up to 7 hours at low level, 5 hours at medium level, and 3 hours at high level. 3APPLICABLE SCENES: Built in excellent carbon fiber heating component, the heating vest is very suitable for outdoor activities such as skating, skiing, hunting, earth shoveling, fishing, hiking, etc. 4FINE PROCESSING: With quilting, lightweight design and fine lining, the electric heating vest has good comfort, and the front has a zipper, the heating vest can be overlapped on various top. 5EASY TO WASH: The heating vest supports hand washing or machine washing in a laundry bag, and dried in a ventilated place to maintain the heating effect and extend its service life.