FUN VIBRANT SHINING COLORS- These self-outline pens write in shiny metallic silver surrounded by a colorful border, even on dark and colored papers. Each color is eye-catching and adds a splash of creativity and fun to items. Perfect for card making, bullet journaling, writing, drawing, school projects, and innovative gifts for kids. UPGRADED DOUBLE-LINE EFFECT- We listen to your feedback! After long-time data and research, we update every detail. Our double-line can be more clear, the writing will be eye-catching to create a beautiful dual-color effect. And it provides rich, consistent colors. Smooth and shimmering! Adds sparkle embellishments to various craft works. PREMIUM QUALITY & NON-TOXIC- The double line metallic pens are made with water-based, opaque metallic ink. The ink is acid-free and non-toxic. Ergonomic design, ensures comfort even when working with them for a long time. Safe metallic markers for kids and adults. Gift for family, best gift for kids. EASY TO USE- With the cap on, shake the marker well to mix the ink. Take off the cap and gently press the tip on a surface to pump out the ink until it begins to flow. For best results, re-cap the markers immediately after use and store horizontally.