Keep your core warm with the FNDN Unisex Heated Vest. By combining Polartec insulation with smart stainless micro-filament, the FNDN heated vest provides lightweight, even heating and extreme durability. The abrasion-resistant nylon outer shell also adds to its strength. Featuring a single button five-setting controller, you can easily customize the temperature inside the vest while maximizing battery life. Making use of multi-zone heating, the FNDN heated vest provides heat to your core and the back of your neck. Additionally, the heated vest comes with a standard USB connection 10,000mAh battery pack, making it easy to connect and charge. It even features a dual USB port so you can conveniently charge your mobile devices on the go. Finally, the FNDN heated vest offers six hours of warmth per full battery charge.