(Ultra Warm, Boa Fleece Electric Heated Vest) Introducing a boa fleece vest with electric heaters that are rarely seen in the industry. The built-in heater warms up quickly, and the boa fleece + electric heater + long back bristle material provides triple heat retention. Super warm! Perfect for protecting against the cold (Excellent Heat Retention / Ultra Lightweight) Made of double-sided fleece material with excellent heat retention, this product is lightweight at about 17.6 oz (500 g). This heater vest is comfortable and soft, and feels both lightweight and warm Supports up to 140°F (60°C), Front and Rear Independent Settings: Switch between 3 levels (Strong: Approx. 140°F (60°C), Medium: Approx. 122°F (50°C), Weak: Approx. 104°F (40°C), so you can adjust the front and back parts according to the cold (USB Powered, Thin Battery Included) Comes with a USB connector and battery, so you can use it immediately once you receive it. Plus, 12,000mAh provides up to 6 hours of continuous use. Commercially available USB powered mobile power supply Package Contents: Electric heated vest x 1, battery x 1 (output: 5V/2.4A), charging cable x 1, instruction manual x 1. AC adapter sold separately. 【Easy to Care】The connectors are waterproof, so you can machine wash or hand wash if you remove the battery, making it easy to clean Can be washed by hand if the lithium-ion battery is removed