The Rubik's Rainbow Ball might look simple at first, but this fun addictive toy will keep kids busy for long periods of time. Rubik's Rainbow Ball Exercises your memory and hands-on skills is a perfect educational toy that will keep anyone busy for long periods of time. Rubik's Rainbow Ball! Color-matching puzzle. Durable & environmentally friendly ABS plastic material. High quality, non-toxic & lightweight. Keeps everyone busy at home, at school, or at the workplace. Exercise your memory and hand skills. Stimulate your imagination and creativity. Test your mental skills and challenge your patience. How it works: 1. Scramble the colored balls. 2. Push colored balls through to pass balls from one slot to another. 3. Fidget balls to get them back to their matching slots. 4. Match all 11 balls to their corresponding colored rings to complete the puzzle!