Forcefield Unisex Unisex Lightweight Heated Vest with Battery Pack - BlackThe heated electric vest comes with continuous carbon fiber heating technology that can last for up to six hours. With 5 heating zones spread across the vest, it guarantees a consistent core temperature by optimizing heat distribution. FEATURES Powerful Carbon Fibre Heating Technology 6 hours of continuous heat One click start with 3 heat levels 5 Heat zones Wear it under your regular jacket without adding bulk Machine washable, just remove the