The ball is small, the diameter is about 7-9 cm, hard plastic, similar to Rubik's Cube. Inside the foam insert, which holds small balls firmly enough. Balls are moved from the cell to the cell with difficulty by an adult (approximately as the above-mentioned non-original cube rotates).
All as in the description.
Came quickly. A good toy for both small and adult. 5 stars deserved.
The son is 2 years old, confused easily, copes. My husband and I have mastered in 10 minutes and now play boring. For the child a good puzzle and fine motor skills develops