Compatible with other brand Square magnetic building sets are compatible with other brand magnetic blocks in same size, Kids can create more patterns by adding more pieces. Learning by Playing Learning by Playing. The characters and alphabet-themed cartoon stickers increase the fun of while play. Stronger Magnet We use the sized (15*5*4MM) magnets makes it easier and quicker to build strong structures or larger projects and won't easily collapse. Read more Ensure Kids' Safety Made of Non-toxic ABS material, BPA-Free, Lead-Free and Phthalates-Free. The marble tracks are ASTM certified and CPSIA compliant which is safe for kids. It has smooth edges, hence the safety of your child is guaranteed with this toy. Fun Design The magnetic tiles are designed as windows that can be rotated. The pipes are translucent and can also be left open so that children can see the marble as it moves from the top of the set to the bottom. Multiple Models The package contains instructions pertaining the product usage. There are simple and complex models. Multiple models can be built from the product. Enhances Creativity and Critical Thinking Children need to use their own imagination to build the model they want. The model-building process helps them to develop their problem-solving and critical thinking competencies. Read more