Package contains all the types of sponges most used in art projects. These include two fine-pore silk sponges, two synthetic hydrophilic sponges and two large coarse sea sponges. Using the correct artist-quality sponge can create a decorative effect like no brush could. This 6-pack of synthetic sponges is great for sponge painting effects, stippling and staining. Use with acrylics, oils, watercolors, fabric, paints and dyes.