Kuby is a versatile sorting cube that stimulates cognitive development from the earliest months. Made with safe biosilicone (20%) and painted wood, it combines fine motor skills, shape recognition, and spatial reasoning. Its interchangeable panels—geometric, numerical, and letter-shaped—allow you to adapt the game to the child's learning pace. The opening at the bottom facilitates free exploration and independent discovery. Ideal for Montessori environments that value sensory manipulation and self-directed learning. Includes 8 wooden shapes, 8 interchangeable panels, and instructions.