Jump into the electrifying universe of magnetic wonders with the Geomag MASTERBOX PRO-L, 388 Pieces! This STEM.org certified toy not only enhances creativity and fine motor skills but also introduces children to the science of magnetism and engineering concepts. With PRO L magnets that are over 30% stronger than the classic line, kids can build larger and more complex structures, stimulating their curiosity and problem-solving skills through imaginative play.

The Geomag MASTERBOX PRO-L, 388 Pieces features:
- A comprehensive set of 388 magnetic pieces for extended play.
- Stronger magnets to build larger, more stable structures.
- Encourages the development of engineering and problem-solving skills.
- Certified by STEM.org, promoting educational play.
- Ideal for creating both simple and complex geometric structures.