Keep the heat happening with additional ProFLEX insole batteries. These spare units allow you to have an extra battery charged and ready to go when and wherever you need it. ProFLEX Battery Pack includes a wall charger with a USB cable and two cushioned battery packs.
Batteries charge in 4 hours or less and last up to 5 hours per charge.
The charging system can also be unplugged and used as a protective
carrying case for the batteries.
