It contains 12 discs in 6 colors, 12 half spheres in 6 colors, 6 spheres in 6 colors. Material that approaches the idea of the round in various formats and colors. Two half spheres that can be turned into a sphere, a sphere that results from joining two half spheres, two discs that are slightly curved but do not become a circumference. Aside it can be an ideal material for diverse constructions and creations of Small Worlds and a perfect material for the mathematical logic and the work of the geometry. Clean with a damp cloth. Ages 3 and up.