Sofft Art Sponges are uniquely designed for use with PanPastels and other soft, chalky mediums. Create unique textures and effects with powdery or water-based mediums. These gentle, micro-pore sponges are specially designed to evenly distribute delicate colors, without brush strokes. Clean with soap and water, squeeze and air dry fully before reusing. Use this large oval sponge for blending large areas of color.