With a ThermaCELL Proflex Battery Pack, you can keep the heat coming for even longer. These spare units let you keep a battery charged up and ready for your ThermaCELL Heated Insoles. Batteries recharge in four hours or less and last up to five hours. Power up using the Included Smart Charging Case or USB cable. Per pair. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Insoles.
