This item is a 3D wisdom ball with four layers for kids IQ training. Adopted of good material and workmanship, it is smooth and safe for children playing. Instruct kids in the actual operation process, train their hand brain application. Features - Color: Random color. - Material: Plastic. - Size: Approx. 7 * 7 * 7cm/ 2.76 * 2.76 * 2.76 inch (L*W*H). - Training hand-eye coordination, cultivate patience and concentration. - Ascending parent-child interaction relationship. - Instruct kids thinking and space imagination ability. - Develop flexibility of the fingers; hand-eye coordination; cognitive ability and logical thinking ability.Packing list: 1 * Wisdom Ball 3D Intelligence Magaic Ball Game Puzzle Ball Educational Toys for Kids IQ Training