The Build and Learn Magnetic Building Set from SmartMax is huge fun for children. Playing with SmartMax stimulates a child’s creative thinking and motor skills. They also learn about the effects of magnetic attraction and repulsion, which encourages logical thinking. All parts are bigger than 3 centimetres so there is no choking hazard. This set also helps improve visual thinking. It comes in a storage box, which can be used as a base for your constructions. SmartMax complies with ASTM F963 / EN71 safety requirements and is produced using high quality materials for stability. Keep magnets away from devices that are sensitive to magnets. All SmartMax sets are compatible with each other.