Magnetic Tiles-Magnetic building blocks make great gifts and STEM toy choices for boys and girls. When kids assemble these magnet blocks into houses pickup trucks bridges castles aeroplanes and more their creativity and imagination hands-on skills design skills social skills and thinking skills will be greatly developed. In addition our 3D magnet building block set is made of high quality materials and fully complies with US child safety standards. The rounded corners are very friendly to small hands. Not suitable for children under 3 years old.