This tract has two parts. One is purple and one is green. Each is curved. Hold the two parts next to each other, holding them from the bottom. Then ask, ""Which is larger, the purple or green' They are the same size. (All four of the above are the same size.) When you place the long edge of one tract next to the short edge of the other, then one appears to be larger than the other. But, it's just an optical illusion. They are exactly the same size. Use this tract as a conversation starter to talk about the gospel. See this youtube video https://youtu.be/qKlOKPU8F38?si=w4q4BjWdp0bu5NNv Sold in packs of 100 (50 pcs purple and 50 pcs green)