The Building Blocks are easy to use and never frustrating. The intelligently designed magnets are housed in colorful， high quality ABS plastic. They always attract and never repel， so the moment any two pieces touch they connect. High quality magnets that instantly connect are sure to spark curiosity. Instant connection， instant fun.Features:These high quality magnets are good for people's all-round development， such as mathematical concepts， geometry， logic thinking， hand-eye coordination， practical ability and so on.It is a creative toy with strong magnetic ability which makes it possible to compose hundreds of geometric patterns.The 72 pieces building blocks contain 15 small triangles， 15 squares， 2 hexagons， 26 blocks， 8 windmills， 6 wheels.No odor， no burr， the magnetic is very good， and it comes in bright color.Adopting reliable magnet material， it is non-toxic and harmless.Specifications:Color: RandomQuantity: 72 PiecesMaterial: MagnetAge: Older than 4Design Style: Geometric Shape Puzzle Style: 3D Puzzle Washing: Yes Applicable gender: UnisexPackage Size: 26.6 * 17.7 * 15 cm / 10.5 * 7 * 6 inPackage Weight:1217.1 g / 43 ozPackage List:72 * Building BlocksNote: Please keep buckyballs away from electric devices， because their powerful magnetic force may destroy the devices. And， keep them away from magnetic memory gadgets， like credit card， soft or hard disk.