Birth - 12 months. This comprehensive kit contains a variety of exciting learning materials that are perfect for engaging infants. The Growing and Developing Activity Kit offers growth and development in the areas of fine motor, blocks, gross motor, cognition, sensory, facial recognition, music, and dramatic play. Encourage children to identify colors, shapes, objects, or emotions as they engage in activities. The set includes 3 miniature pastel-colored baby dolls, a decorative mirror, stacking blocks, and sensory balls. A stacking tower and bird-themed teethers are also included. More items included for hours of learning through play.