This fits your. Make sure this fits by entering your model number. Pressing down the back of the worm makes the worm grow longer, the worm will crawl forward after you release your hand, attracting baby to chase and crawl. It can lead baby to crawl and train baby's physical balance and coordination. The head of the worm can rotate in 360 degree with a sound of 'Dada', when the worm crawls, the color beads in the wheel will beat with a sound, attracting baby's interest to chase and crawl. Hand-eye Coordination: Pressing down the back of the worm helps to coordinate baby's hands, eyes and brain, and strengthen the ability of hand-eye coordination. Sensory Development: It can cultivate baby to perceive colors, discriminate sounds during playing and stimulate sensory development; Motor skills: The crawl of the worm can appeal to baby to crawl and chase, contributing to physical balance and coordination.