The ActionHeat Men's 5V Battery Heated Insulated Puffer Vest is the perfect combination of fashion and utility. Designed to keep you warm in chilly conditions, it delivers comfort and style whether worn alone or layered. The vest features a powerful 5V 6000mAh Power Bank that powers the heating panels and can also charge your phone or other USB devices. Three heat settings, controlled with a one-touch LED button, allow you to customize warmth to your preference. With ultra-fine carbon fiber heating panels and advanced insulation, this vest keeps your core warm while maintaining a sleek and stylish silhouette.