When you first get the mesh soap saver, it is in a very neat cylinder shape but it easily expands to accept a wide variety of shapes and sizes. Just slip your soaps in and close the top by pulling on the cord. A great little spring loaded stopper will lock it. The mesh creates lots of lather and exfoliates your skin. A convenient cord lets you hang it up when you"re done. They are also commonly called soap sack, soap bag, soap pouch.