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.
Features
Compatible with all S, e, and m series battery packs