Bisley Taped Hi Vis Heated Jacket with Hood BJ6842TBisley Taped Hi Vis Heated Jacket with Hood BJ6842T Durable two layer waterproof and breathable fabric Waterproof rating: Up to 20,000mm H2O All seams are seam sealed Quilted lining for extra warmth Built in battery powered heating system with three temperature settings low, medium and high Internal pocket for holding power bank (power bank not included) Power bank minimum capacity 10,000mAh this will produce at high temp (red light) heat time 3