The 2-in-1 stacking ring tower by Chicco combines classic stacking with a versatile shape-sorting game. The set includes four textured rings in different sizes as well as four color-coordinated shapes, including a cube, triangle, cross, and flower. Children can stack the rings by size and sort the blocks into the matching openings. A curved, wobbling base adds movement to the game and encourages targeted balancing skills. The bold colors and easy-to-grip surfaces make it easier to recognize geometric shapes and size proportions.