Abstract: A foot warmer having a water-proof, flexible rubberized layer to protect the user from electrical shock, for installation on a surface such as a running board of a snowmobile, snow removal, excavation or other motorized outdoor equipment. A foot warmer having a flexible heat element for providing heat when actuated, electrical leads from the motor for providing electrical actuation of the heat element, a rubberized layer on the heating element protecting the heating element from environmental conditions, an aluminum foil layer, positioned on the opposite side of the heat element reflecting heat produced by the heat element toward the first longitudinal side of the heating element, an insulating layer, positioned to abut the aluminum foil layer, for insulating the heat element from environmental conditions and an adhesive layer for attaching the assembled heating element to a surface.