Titania pumice sponge nurtures your hands and feet andtogether with water, effortlessly . Removes calluses and hard skin and  ingrained dirt. A special feature of theTITANIA pumice sponge is that contains silver ions which is a biocidal activesubstance that prevents the development of bacteria within the pumice sponge.After each use, simply rinse with a brush under water and your TITANIA pumicesponge  will remain clean and hygienic