Add a shimmering personal touch to letters, create stylish borders and experiment with various designs on paper crafts! This calligraphy marker features dual-tips, with a narrow 2 mm tip for details and a broad 3.5 mm end for bold strokes. Once dry the odorless, long-lasting, lightfast ink is waterproof, allowing you to layer color without smudging.Details:GreenDual-tips (narrow 2 mm and broad 3.5 mm)Water-based pigment inkPhoto-safe, acid-free and xylene-freeConforms to ASTM D4236