Enjoy up to 13 hours of warmth with the Therm-ic C-Pack 1300B battery set, offering both manual control and Bluetooth® connectivity. Use the physical buttons for 3 heat levels, or fine-tune your experience with 10 adjustable levels in the Therm-ic Heat Control app. Best attached to the tongue loop of your ski boot liner.

• Use manually or connect via the Therm-ic Heat Control app
• App unlocks 10 customizable heat levels, motion sensing, and eco mode
• Bluetooth levels mirror manual output: Manual 1 = App Level 3, Manual 2 = App Level