Features 1. Six Major Technologies For Heat And Cold Resistance: precise temperature control, no radiation risk, three speed temperature regulation, constant temperature insulation, far infrared penetration, and washable. 2. Details Display: Fashion windproof standing collar design, windproof hemmed cuffs design, durable and smooth zipper design, using zipper pocket design. 3. Heating Vest: With a power bank and a heating vest, you can instantly warm up, breaking the traditional concept of adding clothes and keeping warm, achieving a convenient travel lifestyle. 4. Third Gear Temperature: With one click on, the third gear warmth can be adjusted to keep you warm throughout the winter. Gently press and hold the switch for 2-3 seconds to quickly heat up! Short press the button to adjust the third gear constant temperature at will. 5. Up To 11 Heating Zones: covering the core areas of the body (neck/shoulders/back/waist/abdomen/arms). Warm up quickly in 10 seconds in cold weather to keep your body warm. There are three levels of adjustable temperature, and you can choose to work on your back/abdomen separately or simultaneously. Specification Material: Cotton Color: Black, Army green Clothing Size: XS, S, M, L, XL, 2XL Size: 35 x 30 x 5 cm Weight: 510 g Package Include: 1x Intelligent Heating Motor