Marble Racers Racing Series brings you the coolest pull-back engine racer ever seen. Cars feature a large marble with the motion-activated LED light inside - give it a shake and the red, blue, green and purple lights flicker and flash as the marble spins! Then pull the car back along any hard, flat surface and let it go to see your racer speed along. These race cars come in a 16 piece PDQ. Great gifts for the little ones and stocking stuffers.