1. Learn to use your brain and exercise your child’s color cognition 2. Detachable storage design, easy to organize and store, easy to carry, play anytime and anywhere 3. Flat bottom, stable and not easy to fall over 4. It adopts a ring-type stacking design to exercise hand-eye coordination during the layer-by-layer stacking process. 5. Material: plastic 6. Tower height: 35.5 cm 7. Small circle diameter: 12.5 cm 8. Middle circle diameter: 14 cm 9. Large circle diameter: 15.5 cm