1) 16 pieces of logs, challenge the balance limit
2) 24 levels, gradually difficult
3) Cooperation/competition for the whole family
4) Small size, put in the bag does not occupy an area
5) Solid pine grain, friction is better
6) No paint, no formaldehyde, leaving only natural wood fragrance
7) 0 burrs do not prick hands, small hands rest assured to grasp