As familiar simple arcs, but three-dimensional, and therefore more interesting! Made on the principle of the traditional matryoshka doll, but in a modern version. This toy can replace ten other toys. Use the hemispheres as utensils, as cribs, houses or caves for toys, arrange from small to large, build towers, store treasures, stack into each other, pour flour, cereal or balls into the sphere, and pour into another sphere. Treat everyday play as an adventure, stay curious and enjoy your discoveries!