Hotronic - S4 Power Set

Your feet will stay toasty warm with this foot warmer power set. Designed to charge and distribute warmth through compatible insoles. You&';ll have long lasting comfort in the coldest of temperatures. For use with Hotronic&';s pre-wired BD Anatomic Insoles or with Heating Elements as installed in Hotronic&';s One Size Fits All Heat Ready Insoles, Semi Custom Heat Ready Insoles, or on custom insoles, orthotics, or insoles of one&';s own choice.