This sponge is designed to clean delicate surfaces all over your home with its patented wedge shape. It's also made with unique fibers that rinse 10x faster than other sponges and dry faster, too. Use a different sponge for each of your surfaces, so you can clean up without spreading bacteria around. This, plus the fact that bacteria won't grow on our Estracell® sponges, makes them more sanitary. That's why Brillo is one of the most trusted names in household cleaning. Sponge Type: No Scratch Scrub Sponge; Material(s): Polyester; Shape: Rectangular; Width: 4.5".