Rectangular loofahs are a firm best-seller here. They arrive as flat as a pancake as they have been vacuum shrunk. Add them to water, and they soon puff out and grow. They are remarkable at cleaning all kinds of things: dishes, surfaces, people! As with many of our homewares: they are totally circular meaning they are compostable and will happily break down in your compost heap. FUN FACT As we have already said loofahs are part of the cucumber family. The loofah or luffa as it?s known in the scientific community can only be eaten when it is young or it becomes too dry. It is a popular cooking ingredient in China, India and Vietnam.