1. Material: silicone
2. Ability development: intellectual development, hands-on brain, grasping ability, etc.
3. The luminous model is powered by a button battery (included)
4. Develop intelligence and cultivate childrens interests
5. Durable rotation
6. Press the bubble design, not easy to deform
7. Wear-resistant and bite-resistant, durable
8. Sealed interface, waterproof and easy to clean
9. Size: 7.8x7cm
10. Weight: 60 grams