Quick cup is a great intellectual game for 2-4 players aged 6+, can develop children's intelligence and stimulate children's thinking ability. | Speed Cups is a good toy for promote Parent-child interactive. | Sturdy and perfect for practicing at home or anywhere. Excellent for working on hand-eye coordination as well. | These cups are made of durable, non-toxic and BPA-free plastic material to meet top safety standards. | Video Link: https://youtu.be/m5DLJo1qhyA