Stack these seven plastic cups into a tall tower and watch water tumble down for endless fun. Each cup is adorned with a different number and character shape, making it a playful way to introduce number concepts. The top cup features a spinner, creating a delightful whirling action when water is poured down the tower. Each cup drains well for easy cleaning and drying. Perfect for the bath, swimming pool, and beach, these cups are 100% BPA-free, lead-free, and phthalates-free, ensuring safety and peace of mind.