This set of 24 Colors Double Line Outline Pens takes creative writing and drawing to the next level with its unique self-outline design, combining metallic glitter ink and effortless double-line effects-making it an indispensable tool for card writing, Diy art crafts, and back-to-school projects. Curated with 24 vibrant, glitter-infused metallic hues, the set covers an extensive color spectrum to meet every creative need: it includes classic metallic staples, bold statement shades, soft pastels, and even specialty tones. Each pen s ink is loaded with fine, reflective glitter particles that catch light for a luminous finish, while its innovative self-outline technology creates two parallel lines with a single stroke: a dense, opaque metallic center line framed by a thin, contrasting outline. This instantly transforms simple writing, doodles, or shapes into polished, professional-looking designs-no advanced skills required.