1、Carbon Fiber Electric Heating Panels: 3 durable and safe carbon fiber electric heating panels to create the largest heating area for maximum warmth to the front and rear of your hands.2、Soft Cuffs: The heated hand muff have soft cuffs that help trap heat perfectly and are as convenient as pockets to instantly release your hands when needed.3、Simple Operation: Choose the right heat output for you, just press the power button on the back to manually heat and keep your hands warm.4、Plenty Space: The Hand warmer has plenty of room inside, loose and comfortable for long term use, and as convenient as a pocket to warm your hands faster.5、Application: Waterproof handheld cover is more comfortable, warm and stylish for hunting, fishing, hiking and photography and other cold winter activities without losing fashion.