Daler Rowney Artist’S Natural SpongeDaler Rowney ArtistS Natural Sponge Daler Rowney Artists Natural Sponge. This high quality natural sponge is ideal for a variety of artistic applications, including painting, blending, and texturing. Each sponge is carefully selected for its texture and absorbency, allowing artists to achieve unique effects and smooth transitions in their work. Whether you're working with watercolors, acrylics, or oils, this sponge enhances your creative process with