Cal’s Sensory Shake-up Activity Rattle engages baby’s eyes, ears, and fingers with 5 multisensory features to promote fine motor skills, sensory learning, and engagement. Multi-sensory features promote developmental milestones like cause-and-effect learning, self-discovery and fine motor skills, as well as sensory engagement. Includes 4 colorful rattle rings, a baby-safe mirror, hourglass rattle, high contrast colors, textured antennae, and twisting character head with clicking sounds. BPA-free toy with textured elements. Features Cal the Caterpillar from Baby Einstein shows and books. Dimensions: 3.7 inches X 5.5 inches. Wipes clean. The Baby Einstein Cal’s Sensory Shake-up Activity Rattle is a multi-sensory toy designed to engage baby in sensory play and encourage developmental milestones. 5 sensory features let baby explore new textures, build fine motor skills, and stimulate cause and effect learning with this BPA-free toy. Baby will love to explore the texture of Cal’s antennae or create some noise by shaking the hourglass beads to create rattle sounds. For cause-and-effect discovery, infants can twist Cal’s head to make a clicking sound or use the baby-safe mirror on the toy’s base to promote self-discovery and delight. 4 rattle rings encourage fine motor skills or help parents teach color learning to toddlers. High contrast colors stimulate baby’s visual development, and two easy-to-grasp handles make this battery-free toy a perfect way to engage baby on-the-go.