If you wear insoles, the HEAT KIT sole is the ideal heat source. The installation of the heating system is very easy, fitting into any insole. A self-adhesive, high-quality Cambrelle cover protects the entire heating element. Price includes installation 

• Fitted with ultra-fine heating elements, the insoles diffuse constant heat for immediate well-being and an optimal foot temperature.
• The C-pack 1300 batteries provide up to 13 hrs of heat.Suitable for use with all Therm-ic C-Pack batteries
• Attached to the existing insoles
• Can be used for all insoles
• Easy installation
• Self-adhesive Cambrelle cover
• Size: One size fits all