ThermaCell Rechargeable Heated Insole helps to keep your feet warmer than you can get by wearing socks. The rechargeable foot warmer can be controlled via wireless remote. The device uses high-tech wireless thermal technology, which means you’ll not be required to strap any battery or wires with your body or belts. The insole is adjustable to 3 temperature settings and features hidden lithium-ion polymer batteries that can be recharged up to 500 times using the charger that is included.
Available at amazon.com for st $122.99