The Therm-ic TrimFit elements
Designed for the custom adaptation to a snug fitting boot or special insoles. The TrimFit Heating Elements are compatible with any Therm-ic batteries.
Package contents: 1 pair of Therm-ic heating elements with connecting cables.
1 pair of self-adhesive Cambrelle fabric covers and straps to prevent your socks from catching the wires or heating elements when you slide your foot in or out of your boot.