Polyurethane foam and a special agent inhibit coarse materials that create odors. To help you know what's going on, we've added a fading monogram. Once the monogram has faded, throw away your sponge and pick up a new one. Tap into your inner cleanliness monster with the non-abrasive scouring pad that rinses clean; great for dishes, counters and wherever your cleaning spree takes you Quick drying so you never have to reach down the sink again and get that wet bread feeling again. Please keep your home clean and your mind clearer: A clean sponge that holds less grime than traditional sponges. Note: The data is all manual measurement, please allow 1 - 6cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.