1Simple design, light and compact, easy to carry and use, convenient and practical. 2Interesting game, let the child learn to think in play, release pressure, antianxiety, stress reduction. 3Simple cleaning, parents can also play with their children to promote parentchild relationship. 4Made of high quality ABS material, resistant to fall and wear, sturdy, durable and long service life. 5It is beneficial to exercise children's spatial imagination, logical thinking and exercise the flexibility of fingers.