use from infant to toddler up to 18kgsensory functionfrom the toys hanging overhead to the calming vibrations in the sweet seat bellow this rocker can stimulate or soothe babys senses this grow wit me rocker takes baby from infant to toddler becoming a familliar happy place seat and calm vibration sensory developmentmachine washable pad4 position recline seatcalming vibrationsdeep craddle seatgrows and rocks along with baby