STRONG MAGNETSCarefully selected natural permanent magnet with a stronger magnetic force to easily build firm shapes. SMOOTH EDGES WON'T HURT HANDSOver 20 times mold improvements laser polishing ensures the edge of tiles are smooth and burr-free for the baby's best care. Manufacturered by Dopobo. GORGEOUS COLORThe tiles are rich and pure in color and its shadow in the light are beautiful like the rainbow. WHAT'S IN THE BOX2x large squares 28x small squares 18x small triangles 12x right triangles 8x tall triangles. Recommended for ages 3 years and up. MORE PLAY MORE INTELLIGENTCan be built into various shapes to develop kids imagination creation hands-on ability color recognition and cognitive ability.