Flexible tip and endless blending possibilities. The Zig Clean Color Real Brush Markers features water-based odorless and xylene-free dye and a single-sided nylon bristle brush tip. The nib is small very flexible and boast incredible elasticity; making it flow easily between thin to thick lines in a single stroke. Clear Color Real Brush Markers are great for all forms of art including scrapbooking rubber stamping illustration cartooning fine arts brush lettering and card making. Pair with Zig Blender for amazing blending effects!