Magical Multi-Functional : Great for Intelligence Development, Hands & Eyes Coordination and Balance, Spatial Cognition, Focus, Observes Ability and Patience Training. Help to Improve Player'S Space Imaginative Ability, Memory. . Great Fun to Play Anywhere: About 10Cm In Diameter, Easy to Carry Anywhere. Best Desk for Stimulating Inspiration, Relieve Stress. Also Good for Parents-Children Games, Party Games Killing Time. This Brain Puzzles Are Interesting for People Who Love Brain Games, It'S Also A Nice Gift for Your Kids Friends Family Colleague. . Safe to Use: This Labyrinth Brain Teaser Puzzles Is Made of Abs Non-toxic Plastic Material, Burr Free, and The Tiny Steel Ball Is Confined to The Transparent Protective Cover, Safe for Children to Play. . Suitable for The Crowd: Suitable for 6+ Kids, Adults and The Old Aged. to Increase The Level of Difficulty, The Steel Balls In The Hard & Highest Difficulty Level Maze Are Relatively Small. . Ultimate Puzzle Games Gift Idea: Ultimate Gift for Kids, Friends, Family Members, Beginners, and Professionals. Provides Hours of Enjoyable Game Play Perfect for Reducing Stress, Exercising Your Brain and Improving Memory-Suitable for All People. .