We love the simplicity of this bong’s design. Yes, simplicity. For while you may see six holes and think it is complicated, you need to consider that they managed to fit in a diffuser in the bong, without adding a diffuser separately. Usually the diffuser is inside the bong, but the geniuses at Genie made it a part of the bong’s design by adding six holes. We also love the color combination used on this huge 18 inch bong. This is made out of premium German glass. It is durable and beautiful.