The Hotronic FootWarmer Power Plus S3 Series boot heating system with BootDoctor Semi Custom insoles has been discontinued.
Please see our current selection of battery boot heaters.
Looking for that extra edge in performance and comfort? Then the Hotronic FootWarmers S3 Series with semi custom insoles
has the solution. Hotronics FootWarmers Power Plus S3 Series battery packs have four different heat settings that allow you to maintain the comfort level and warmth in your feet. No matter how cold it is, your feet can stay nice and cozy.