- Multi-barriers: 6 mechanical buttons, 9 levels(other simple version in 4 buttons) , more barriers and challenges.
- Hand operation: no need battery, it’s in gravity and inertia,mechanical movement. Teach child physical knowledge.
- High Quality: non-toxic ABS environment material, approved by US toy highest standard ASTM F963, European EN71. Best Birthday Christmas festival gift for kids, toddlers.
- Stimulate curiosity & creativity,cultivate patient &hand-eye coordination,explore logical thinking ability and memory.