Preferred age: 3 This 110-piece Track Ball Magnetic Building Blocks set offers endless opportunities for creative construction. The magnetic blocks are designed for easy assembly, allowing children to build intricate track ball structures that light up with the included lighting feature. The 7.5CM size makes it suitable for younger hands, while the glowing blocks enhance the building experience, making it visually captivating. Note: Adult supervision is recommended as this toy may contain small parts that could pose a choking hazard.