Made with 100percent recycled plastic, the Geomag Green Line Color 60 pcs uses powerful magnetic rods and steel spheres, allowing children to create unlimited structures. A great introduction to STEM activities. Geomag is an educational game in the STEM category that offers an interdisciplinary approach to learning. Through magnetic construction, Geomag toys encourage the development of hand-eye coordination as well as strengthening visual sensitivity and attention span. Take it with you wherever you go. The Geomag Green collection includes a practical box (that is also made from 100 percent recycled plastic) that allows you to bring your Geomag geomagnetic set with you and keep it tidy at home. No limits to your imagination with Geomag: The elements of this set are compatible with all the Geomag Classic and Panels collections and are the perfect magnetic toys for kids. All Geomag products are made in Switzerland, are known for their high-quality materials, and follow the most stringent European and international safety standards (ASTM and EN-71 Certifications for toy safety). The geomagnetic set contains metallic balls, light green, dark green, blue, and light blue magnetic rods. The elements are compatible with all the Geomag Classic and Panels collections and are made with 100percent recycled plastic.