Features：
Select the insole according to the size of the inner length of the shoe.
Carbon fiber, uniform heating, high heat conversion rate and fast heating rate.
Long-lasting effect, keep warm when charging.
Promotes blood circulation, increases metabolism, and enhances immunity.
Comfortable to wear, relieve pain and reduce fatigue.
Washable, not machine washable.
Can be placed directly on the shoe for easy storage.
Specifications：
Color: Black
Voltage: DC 5-6V
Average temperature: about 40°C
Power: Up to 8 W
Weight：80g / 2.82oz
Size:
Shoe Size(cm）： 35 36 37 38 39 40 41 42 43 44
Foot Length（cm）： 22.5 23 23.5 24 24.5 25 25.5 26 26.5 27
Insole Length（cm）：23 23.5 24 24.5 25 25.5 26 26.5 27 27.5
Package List:
2 * Insoles
1 * USB Cable