B. BabyChew away. Each ball feels diffrent, offering a unique sensory experience.Four unique balls come in various patterns and colors to bounce, kick, squeeze, roll and chase.The spikey one is a perfect teetherfor those who just need to chew.The holey one is perfect for little hands that like to grab, with a rattly ball inside.The bumpy one lights up on impact when you toss it around.The swirly one squeaks out when you squeeze it.Requires 3x AG13 batteries (included).Wacky wobblers for wee onesToss ‘em up, down and all around6+ months