My project is based on a shoe insole with a heater that serves to avoid cold feet. I have created it because cold feet are unpleasant and my idea is quite good to avoid it. 

That project can avoid the hypothermia, the project is quite important, it helps people with cold feet.

For the prototype I have not used complicated materials, cardboard, nicrhoma wire, an energy generator and some cables to connect them with the generator to the template.

People with cold feet will use it to avoid having it anymore.