Abstract: A clear or translucent U-shaped insert has embedded within its cavity a light emitting module. The insert is preferably manufactured of polyvinyl chloride and conforms to the shape of the heel portion of footwear manufactured under the process of injection molding using polyvinyl chloride as the injected molten material. The light emitting module comprises a power source, electrical contacts, a plurality of light emitting devices and a switch engaging means. The insert is permanently molded into the sole of the footwear about the heel such that when the switch engaging means illuminates the light emitting devices, the devices can be viewed from the exterior of the footwear.