Ultra thin, lightweight and reliable. Use the original sole of the shoe to easily cut the insoles to fit your foot.
Supplied Without Batteries. Please note: you need 2 batteries (one for each sole). You can use your own powerbanks (5V) or purchase Nordic Heat hand warmers/powerbanks (5V). 5000mAh provides 4 hours constant heat – 10000mAh for 8 hours.