• German engineering design offering endless construction possibilities to develop spatial thinking. • Each color block has a unique function, encouraging logical and engineering thinking. • Ideal for family enjoyment, promoting quality time together. • Manufactured with a commitment to sustainability, meeting international safety and quality standards. • Includes a xylophone rail that plays a musical scale as the marbles pass. • Recommended for children aged 4 and up. • Product dimensions: 30 cm long, 7.9 cm wide, and 18 cm high. • Product weight: 0.4 kg.