Material: PLASTIC Type: Puzzle Cube Age Range:> 6 years old Features: 1. Made of high quality ABS material. 2. Injection molding makes it wear-resistant and durable, and is not easy to decompose. 3. Smooth rotation and dynamic balance give you a comfortable feel. 4. Anti-adhesive groove design with adjustable spring for a long, smooth and comfortable feel. 5. Activate your imagination and creativity to improve your memory and hand flexibility.