Features 1. One click on to warm you up throughout the winter: Gently press and hold the switch for 2-3 seconds before heating up quickly! Short dark key, three controls and three gears can be adjusted freely. Blue gear: Low temperature, daily warmth. White range: medium temperature, dispelling cold and dispersing cold. Red gear: medium temperature, outdoor cold resistance. 2. 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. Adjustable temperature, you can choose to work on your back/abdomen separately or simultaneously. 3. Adjustable size, smooth zipper: The heated vest has zippers on both sides, and you can choose to close or open the zipper according to different body shapes, allowing you to wear it more loosely and tightly. 4. Lightweight and comfortable material: Made of high-quality cotton lining and waterproof and windproof surface material, comfortable and warm. You can enjoy hiking, skiing, motorcycles, fishing, hunting, camping, office work, or outdoor heated work clothes. No need to wear bulky clothes, easily keep warm throughout the winter. 5. Not afraid of water washing: This product can be directly washed without worrying about water washing issues. The power interface is treated with waterproof bonding. Specification Material: Cotton Color: Black, Dark blue Clothing Size: S, M, L, XL, 2XL, 3XL Size: 35 x 30 x 5 cm Weight: 510 g Package Include: 1x Intelligent Heating Vest