Stable support for better pressure distribution. High-quality heating elements to maintain optimal foot temperature. Externally positioned cable allows for perfect implementation in any footwear. Technical features 1. Easy to cut and fit, fits all shoes 2. Ultra thin heating elements for optimal foot temperature 3. 3D EVA shell / Foot support & stability 4. Works with Therm-ic C-PACK batteries 5. Microfiber lining / Comfort & durability Instructions for use Remove the old sole from the shoe Cut the HEAT3D to the desired size at the marked places. Be careful not to cut the power cord and heating element in the area under the forefoot. Place the HEAT 3D insole in the shoe Run the power cord up the heel along the calf Connect the power cord to the Therm-ic C-PACK batteries
