Racer Runners is a sound and light module placed on the shoe, turning any pair of footwear into a magical adventure race. Racer Runners is a sound and light module placed on the shoe turning any pair of footwear into a magical adventure race. Easily secured on the shoe and placed in the "ready" mode, the Racer Runners ignition relies solely on the movement and running of your racer. Sound is released with rapid fire lighting. Just stand back and watch it happen, your child's imagination will do the rest. Racer Runners will deliver four exciting and real sounds.