3 months & up. Invite your little ones to a sensory experience with this set of brightly colored rattles. These textured Baby Grasp and Explore Rattles support the development of fine motor skills, dexterity, hand-eye coordination, cause and effect, and exploration. This set of rattles features spinning parts, light-up balls, rings, and colorful beads. Encourage children to explore the features and functions of each rattle.