Re-usable eco-friendly and biodegradable sponge 100 Cellulose sponge made from plant fibers with no polyester filling Sponge originally comes compressed Add water for sponge to expand Lightweight and thin makes for a great direct mail item Large imprint area Preprinted light grey text on bottom of sponge stating Enviro Sponge Biodegradable Just add water Please note when expanded the sponge holes will consume portions of the imprint into them Biodegradability Once you put the sponge in a landfill it will break down and decompose in a matter of weeks How long can you use it If you keep a cellulose sponge clean you can reuse a it for up to six months Although with frequent care and rougher use your sponge may only last about a month To make them last rinse sponges thoroughly after each use Allow them to dry completely open to the air