Feature:1. Comfortable: Electric heated insoles are made of soft materials, it is very comfortable to wear, which solves the problem of cold feet in cold weather.2. Large Capacity Battery: The battery has a large capacity, up to 2100mAh, which can be used for a long time after charging.3. Cuttable: You can cut along the size line on the insole according to your foot size, but cutting is prohibited in the area within the size line.4. Good Winter Gift: The best gift for your family, relatives and elders on Christmas Day, Birthday, Mother's Day, Valentine's Day, Labor Day.5. Wide Application: Let you be more energetic in winter activities, such as hunting, skiing, riding a motorcycle, climbing or walking.How to Use:Button operation on the insole:1. When putting in the insole, press for 3 seconds, the LED indicator will light up in red, indicating that the temperature is high;2. Press it again, the blue LED light is on, indicating that the temperature is moderate;3. Press it again, the green LED light is on, indicating low temperature. Quickly click to cycle the red, blue, and green lights, and the high, medium, and low temperature can be adjusted. Press for 3 seconds to shut down.Specification:Item Type: Heating padMaterial: Ossley + cotton + velvetInsole Built-in Battery: Lithium battery 2100mAhRemote Control Built-in Battery: 1pcs 27A 12V batteryRemote Control Battery Capacity: 30mAhHeating Parameters: 1. Th