Hand Warmers Rechargeable with 10000mAh Power Bank, Portable Graphene Heated Electric Hand Warmer Pouch, 5 Level Adjustable Temperature for Women, Men, Kids, Hunting, Camping & Xmas GiftsRapid Heating HAPAW electric hand warmer adopts efficient graphene heating technology. With its extraordinary thermal conductivity, providing faster and more even heat distribution in a short period of time and can significantly reduce the waiting time for the heating process. Large Capacity Battery Hand Warmer with a robust 10000mAh rechargeable power bank ensures the long lasting, delivering to 4 15 hours of continuous heat. It can also be used as a