Magical Insole / Insole - Warm

In winter,many people will put on warm shoes or warm insoles. But these things really distress us when their endurance and charging problems occur,especially together with some certain danger coefficients. Magical Insole contains exothermic material. This material will heat uniformly under pressure. When people walk,soles can produce periodic pressures on the insoles,and by which in return,insoles can produce uniform heating which can provide our feet warmth continuously. Magical insole is safe,environmental-friendly and easy to use.