Our heat jacket vest can offer a warm winter for you. Adopt better heating scheme and more advanced materials with higher heating efficiency, saving more energy. Coming with the USB cable, it can compatible with most power bank. It has 3 heat gears to be adjustable, low/mid/high temperature and you can adjust the heat level according to your own needs. 5 Heating Pads: Adopt 5 carbon fiber heating elements to produce heat on the left and right of the body, left and right waist and middle back. It not only warms your stomach, back, waist and abdomen, but also enhances blood circulation. 3 Adjustable Temperatures: 3 heating gears—Red/High Gear (about 45°C /113°F), Blue/Mid Gear (about 35°C/95°F), Green/Low Gear (25°C/77°F). You can press the power button to adjust temperature level according to your needs. Bring warmth to you. Lightweight & Comfortable: Made of soft skin-friend pure-cotton stuffing and polyester, which ensures smooth and comfortable feeling. Lightweight for you to wear in many occasions leisurely. USB Port Heating Vest: Come with USB cable, it is better for you to carry a power bank (5V/2.1A max output). Zipper design for quick wearing and hand pocket to accommodate your power bank (not included). Easy To Wash: Our heating jacket vest can be washed by hand, machine or dry wash. Please be aware of that you should put it in the laundry bag (not included) for machine washing. Please gently wash by hand, do not bend it. Note: 1. Please forgive 2-3cm error due to manual measurement 2. Size up if your size is just somewhere between two yards. 3. If your belly is a little bulge, please choose a larger size than regular one. 4. Hand wash is recommended. Wash bag should be used when you use machine wash. 5. Portable Battery/Power Bank is not included. 6. The heat indicator light is slightly different due to different batch. Please in kind prevail. Brand: NPolar Product Type: Heat Jacket Vest Material: Pure-cotton Stuffing & Polyester Color: Black Powered By: 5V/2.1A Power Bank (not included) 3 Heating Gears: Red/High Gear (about 45°C /113°F), Blue/Mid Gear (about 35°C/95°F), Green/Low Gear (25°C/77°F) Item Bust Width: L: 53cm/20.8in; XL: 55cm/21.65in; XXL: 57cm/22.44in; XXXL: 59cm/23.23in Item Length: L: 63cm/24.8in; XL: 64cm/25.1in; XXL: 66m/25.9in; XXXL: 67cm/26.3in Item Shoulder: L: 41cm/16.14in; XL: 42.5cm/16.73in; XXL: 43.5cm/17.12in; XXXL: 45cm/17.72in Item Upper Arm Circumference: L: 55.5cm/21.8in; XL: 57cm/22.4in; XXL: 58.5cm/23in; XXXL: 60.5cm/23.8in Item Chest/ Waist/Hip Circumference: L: 106cm/41.73in; XL: 110cm/43.31in; XXL: 114cm/44.88in; XXXL: 118cm/46.46in Item Weight: L: 241g/0.53lbs XL: 251g/0.55lbs XXL: 266.5g/0.59lbs XXXL: 273.5g/0.6lbs Package Size: L: 38*34*6cm/14.96*13.39*2.36in XL: 40*34*6cm/15.75*13.39*2.36in XXL: 45*38*5cm/17.72*14.96*1.97in XXXL: 48*38*5cm/18.9*14.96*1.97in Package Weight: L: 332g/0.73lbs XL: 368g/0.81lbs XXL: 405g/0.89lbs XXXL: 450g/0.99lbs 1x Heat Jacket Vest 1x User Manual