Synthetic Sponges Synthetic sponges are reasonably priced allowing you to use it as a disposable sponge with oils and any other desired paint type. Create decorative faux finishes, sponge painting effects, stippling and staining. Great for tile, pottery, ceramics, walls and more. Use with acrylics, oils, watercolors, fabric paints and dyes. Measure 2-1/2" across, 3 Per Package.