ThermaCell Heated Insoles

Anyone who's spent long hours out in the cold can tell you that while your hands, face, arms, and legs can get cold, nothing will send you reeling for the warmth of an indoor shelter faster than cold feet. ThermaCell Heated Insoles ($120-$200) are designed to prevent this by heating your boots/shoes from the inside out. Powered by rechargeable lithium polymer batteries embedded in the insoles, they're controlled via a remote that offers off, medium (100º), and high (110º) settings.

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