If you have ever had cold feet, the literal kind, you know how miserable it can be. And typically, there isn't much you can do to heat an existing pair of shoes. Instead of buying a new pair of shoes specifically for cold weather, you can insert heated insoles. The ThermaCELL Rechargeable Heated Insoles are powered by lithium ion polymer batteries that are embedded inside of the sole. No wires and no clunky batteries. You simply charge the ThermaCELL insoles, place them in your shoes, and use the wireless remote control to set the heat level. There are three settings "“ no heat, medium (100 degrees), and high (111 degrees). Yours here for about $150 depending on size.