Our Soapsaks have an enclosure in the middle designed to keep your bar soap from getting soiled or filthy. At the same time your entire bar dissolves into soapy lather when you bathe never wasting any of it. Particularly any small pieces go inside. Absolutely none of your soap is wasted! Also, you never get that mildew smell from your soapsak like the old washcloths. Made of quality terrycloth and use soft soaps if you prefer.