Parents absolutely loved Noggin Stik and sang its praises in their reviews. Combining fun with learning, the thoughtfully constructed rattle offers a variety of parts that stimulate your baby. The rattle lights up and changes color, the body of the toy is made of different textures and there is a mirror on the bottom. The rattle is made of durable thick plastic which makes the rattle sound deeper and actually more pleasing to the ear. That thick plastic design also allowed it to survive dropping, teething, banging and other forms of abuse that babies can dish out. Back to the light. It is activated by a baby strength whack, giving your child control, something our baby testers loved. The first whack lights up the translucent plastic with a calm soothing glow. Thereafter each successive whack changes the LED’s color. The light also turns off after a while to conserve batteries. Our favorite comment about the Noggin was that it was a baby rattle on steroids!