Description: Double line markers set with 8 / 12 vivid colors, unique technology produces sliver outlines, for you to create a beautiful and bright dual-color effect. Mark light and dark surfaces easily with the light, suitable for all ages of people to use safely. With the on, shake the marker well to mix the ink. Take off the and gently press down the tip on the surface a few times to pump the ink until it starts to . Comes with colorful bright colors containing shimmering ink, which will add a sparkle luster. Great for arts, crafts, coloring, gift cards, Christmas cards, DIY craft projects, paintings etc. Featuring -fine nib, quick-drying, non-toxic, odorless. Children under 3-years old should be used under the supervision of adults. Specification: Pen shell material: Plastic Pen Length: approx. 13.5cm/5.31 inch Ink: water-based, non-toxic Widely applicable: Rock Painting & Black Paper, Gift Card Making & Scrapbooking, Fabric & Metal & Ceramics & Wine Glass, Halloween Pumpkin & Easter Egg Package Includes: 1 Set Double Line Markers Note: 1. Use on paper thicker than 80g to prevent ink penetration. 2. Use writting pad for thin paper prevent ink bleed through. 3. Recommend to cover the after use and store horizontally. 4. Contains small parts. Not suitable for children under 3.