Magic Rainbow Ball Puzzle Cube for Kids (Blue) High-quality rainbow magic cube, a simpler version of the stickerless magic cube with a compact, fast, and smooth design that never jams. Super practical and reliable. Made of original and environmentally friendly plastic material, non-toxic, harmless to people and the environment, reasonable size (diameter 70 mm), fits well in the hands and can be easily carried wherever you want. A very interesting rainbow puzzle to train logical thinking, color sensitivity, and hand coordination, improve patience, and enhance mental ability; Perfect gift and stocking stuffer for everyone, as it is perfect for children to develop their intelligence, for adults to kill time and relieve stress. How to play: Similar to a traditional magic cube with a tile puzzle. There is a hole in the ball without a smaller ball inside, you can move a small ball into the empty hole and continue mixing the balls. Then you need to know how to restore the color ball to the appropriate color holes.