1510 9th Street South, Great Falls, MT 59405. 406-727-3955 9:00 am- 6:00 pm

Hotronic FootWarmer


Keep feet happy and toasty with the Custom S4 Footwarmer kit.

Spread warmth through insoles for long-lasting comfort in freezing weather.

Out of stock


The Hotronic FootWarmer Power Plus S4 custom system is Hotronic’s highest performing foot warmer. The footwarmer operates with a 4 cell battery pack for more warmth and duration than ever before. If you want to make the most out of every bluebird day no matter how low the temps are sitting, the Hotronic FootWarmer S4 provides the warmth your feet need. Don’t let cold feet send you inside before you’re ready to quit! Plus, after ski season ends, easily swap the heated insoles from boots to bike shoes to waders, and enjoy warm feet for any cold weather activity!

  • 4 Temperature settings
  • Battery life lasts up to 21 hours on low (84°-98°), 4.5 hours on highest setting (158°-173°)