No more suffering this winter. Get yourself a pair of USB Heater Insole, it is a USB powered insole that heats up, keeping your feet warm all the time. The insole comes with different sizes and you can trim it down to fit the size of your feet. USB Heater Insole adopt microwire heating elements that heats the entire surface of the insole and deliver smoothing warmth in your shoe.\
The insoles are washable.
Dry the insole at places with good air ventilation
Unplug the power when you not in use, avoid long heating.
A good choice for winter.
Can be trimmed to fit any sizes.
High heating speed, high efficiency and strong stability.
Heats entire surface area of your foot.
Microwire heating elements deliver smoothing warmth.