Feature: 1. Using four-control twenty-one area heating technology, 360° warm embrace the whole body. 2. No radiation risk, three-speed temperature control, constant temperature warming. 3. Using carbon fiber far-infrared heating, heating and warming to dispel the cold. 4. Large heating area, including neck, shoulders, back, waist, abdomen, and arms. 5. Can be washed directly, the power interface uses knotting waterproof treatment. Specification: This smart electric heating cotton jacket, using four-control twenty-one area heating technology, 360° warm embrace the whole body, just need a power bank, you can instantly feel warm. Break the traditional clothing to keep warm, realize the life concept of convenient travel. Features: Using four-control twenty-one area heating technology, 360° warm embrace the whole body. No radiation risk, three-speed temperature control, constant temperature warming. Using carbon fiber far-infrared heating, heating and warming to dispel the cold. Large heating area, including neck, shoulders, back, waist, abdomen, and arms. Can be washed directly, the power interface uses knotting waterproof treatment. Specifications: Material: 100% Chinlon Color: Black Size: L / XL / XXL / XXXL PAckage size: 55*40*3*cm / 21.7*15.7*1.2in PAckage weight: 480-540g Package List: 1* Smart Electric Heating Cotton Jacket Package List: 1* Smart Electric Heating Cotton Jacket