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  • Hotronic S4 Custom insole red
  • Hotronic Universal Red insole

Hotronics S4 Universal 2019

Sorry, currently out of stock
Description : The Hotronic S4 Universal with strap bracket is the way to keep your feet warm. Works great in many types of footwear. The strap bracket put the batteries to the outside of your boot, and holds them securely so they do not get lost. The only difference between the UNIVERSAL and the CUSTOM is the the Universal comes with a seperate foot pad the makes installation easier and better for a long life. If you have a Custom insole you should buy the Custom