Mirari Roll & Return Ball Products that are great fun from children to adults High quality toys and games Games and toys that the whole family can enjoy 2 modes of play makes it a versatile toy that grows with your child Play with it like a regular ball, rolling and chasing it; press the side switch to make it "magical" so it comes back to you when you roll it The inner penguin stays upright when the ball rolls Develops gross motor skills, fine motor skills and cognitive learning For ages 6 months and up; no batteries required