A useful helper on any hunting or outdoors trip, the Muddy 3-in-1 Hand Warmer comes equipped with four different temperature settings, a long battery life, and ports to keep your electronics charged. 
 

Specifications; 

• Warms your hands
• Built-In LED Flashlight
• USB power bank to charge electronics
• Four temperature settings up to 21 hours
• 10k mAh portable power