Our Aqua® AF2XL polyester sponge is made from hydrophilated polyester for extreme durability and absorbency. This professional-grade sponge is ideally suited for tile and grout, masonry and texturing applications. The large size, shape and durability of the AF2XL polyester sponge make it the preferred sponge used for tradesman, professionals and DIY alike. The AF2XL sponge stays soft, floats and can be sterilized by boiling.