Science & Exploration Sets features: The objective of these puzzle balls are simple, get all the colors of the orb to match the outline of the ball and you are done This is an excellent toy for children as well because it helps to develop their logic thinking ability and motor-skill coordination, exposing them to different sensitivity of colors. Features-Color: Colorful-Material: ABS-Size: 7x7x7cm/2.75x2.75x2.75in Your objective is to scramble the colored balls, then figure out how to get them all back into their matching colored slots in all holes The balls can be moved around using the empty hole, which allows the puzzle to be jumbled. Move all of the balls back into their proper places to solve the rainbow ball puzzle The puzzle ball might look simple at first, but this fun addictive puzzle will keep kids busy for long periods of time This Rainbow Ball adds a lot of facets to the original Ball, which makes this ball toy more difficult Help to improve the child's logical ability to judge and patience, but also effective decompression tools.