Perfect for infants four months to walking. Variety of age appropriate toys designed with fun and learning in mind to help babies achieve 10 important developmental milestones. Features a variety of songs to help musical development and cause and effect learning.All toys designed to help develop baby's gross motor skills, fine motor skills, object exploration, cause/effect learning, self awareness, tactile development, visual development, object permanence, hand eye coordination and musical development.Baby can rock, spin or bounce to promote physical exercise to develop baby's neck, back and leg muscles. Three-position height adjustment grows with your child to allow for longer use. Three flip-down feet provide a stationary position for younger babies until they're ready to rock.