Features 1. 9 heated zones: This heated vest features 9 heating plates made of nano composite fiber. The high heat conversion rate effectively warms the back, waist, and abdomen. 2. Three-level temperature control: Activate the vest and press the button to adjust between three heat settings. High temperature (red), medium temperature (white), and low temperature (blue). 3. Suitable for various environments: Designed to be waterproof and breathable, this heated vest keeps you warm during outdoor activities such as snowmobiling, motorcycling, mountain climbing, camping, hiking, skiing, fishing, hunting, or daily office wear during fall and winter seasons. 4. USB-powered heated vest: This women's heated vest is powered by a mobile power bank (not included). A 10000mAh power bank provides up to 8 hours of continuous heating with heat activation in 3 seconds. 5. Fast and safe heating: Engineered for cold weather, simply connect a power bank to activate rapid heating. Carbon fiber heating elements warm up within 3 seconds. The system automatically regulates temperature by pausing heating once the set level is reached, resuming when temperature drops. Specification Material: Polyester Color: Black, White Size: S, M, L, XL, 2XL, 3XL, 4XL Weight: 400 g, 450 g, 500 g, 550 g, 600 g, 650 g, 700 g Power bank compatibility: 10000 mAH Usage time: Up to 8 hours Package Includes: 1 x Heated Vest