Some pros: 1. outward manifestation. They are eye-catching in both appearance and in their peculiarity. 2. I'm sorry, but I have no further ideas. I thought of it myself! There are two different disadvantages to this: 1. Why do they charge such a high price? It's not the cheapest plastic, and yes, they are produced with good quality, but each one doesn't cost three thousand dollars. I don't understand why people think that. 2. unpleasant. Everything is up to the individual.