The Magna-Tiles Metropolis 110-Piece Set containing brightest colors magnetic tiles in motion, allows you and your children to build everything from a high-rise city skyline to a bustling colony in outer space. Magna-Tiles are completely non-toxic and made with food-grade ABS plastic that's free of phthalates, latex, and BPA, but doesn't sacrifice durability being able to withstand years of creativity both indoors and outdoors. The shapes are designed with small hands in mind and easy to handle. Each of the 110 translucent, colorful shapes in this set attach to one another with a signature "click" and include a mixture of squares and triangles. Suitable for ages three and up, this set makes learning fun, encouraging the understanding of geometric concepts, color theory, STEM skills, teamwork, problem-solving, and more. In fact, Magna-Tiles sets are used for educational purposes in classrooms and homeschooling settings across the country. Stainless steel rivets and sonic welding ensure that each and every piece is resistant to damage such as scratches and dents, while strong magnets keep creations intact for use in other activities. What's more, all Magna-Tiles sets are compatible, providing children the creative freedom to build giant structures or highly detailed models.