1. Material: wood
2. Pull out one block at a time then place it on top until the stack collapses
3. Stimulate childrens cognition of shapes and reactions
4. A great way to enhance your childs hand-eye coordination
5. Played together with dice, it can exercise childrens thinking skills
6. Promote parent-child relationship and cultivate childrens patience
7. Not suitable for children under 3 years old
8. Single piece size: 5.1 x 1.7 x 0.8cm
9. Weight: about 300g/set