ThermaCELL Heated Insoles ProFLEX Battery pack for ThermaCELL ProFLEX heated insoles.

Package Includes:

• 2 rechargeable lithium-ion polymer batters
• 1 USB cable
• 1 wall charger
• 1 smart charging case

Features:

• Charge lasts up to 5 hours
• Batteries charge in 4 hours or less
• Use wall charger or any USB port to charge
• Wall charger wires disconnect, become carrying case for batteries