Product detailsFeatures: With 100 Challenging Barriers, exercise practical ability, improve balance, enhance understanding of space. Size: 4.7*4.7inch, made of high quality plastic, durable and not easy to torn, for long time use. Easy to use: Rotate the ball, let the small steel ball move in numerical order on the track, and try to reach the destination. Perfect for gift, it is best choice as a birthday gift for childrenification: Color: As per the photos. Material:Plastic. Size: 4.7*4.7inchage Included: 1x Puzzle maze ball.