The new Building Genius is an educational 9-piece set combining Hix, Mox & Oibo. Each of these three award-winning toys offers a broad range of sensory stimulation and play possibilities from birth and onward. Together, they take play to the next level as a universal building and construction game. Building Genius grows with your child, surprising with new uses and challenges at each stage of the child's development. The elastic building blocks are made of durable, food-grade silicone rubber for unlimited fun and maximum safety. Simply throw them in the dishwasher to clean or even boil them in hot water to disinfect, and best of all - they are completely silent.