HME Products Rechargeable Hand Warmer Portable Power Device w/White LED Flashlight, Li-Ion Battery, HME-HW

With a 5V 1.5A output it can easily be used as a power bank but also a hand warmer where it transfers heat evenly to your hands and gloves when you need a little extra help. If you find yourself in a pinch without power quickly recharge your mobile devices by using the built-in USB port.