Painting with watercolors and water- soluble paints has never been easier! These brushes feature a refillable water reservoir and synthetic taklon bristles. Fill with plain water and use to activate and blend watercolor paint pans, pencils, and crayons. Or fill with Liquid Watercolor paint to create art on watercolor or diffusion paper. Gently squeeze plastic barrel for easy to control flow of paint or water. Brushes clean easily after use.