Safe, reliable ink: Acid-free, non-toxic formula that resists smudging, fading, and leaking. Suitable for notes, textbooks, and long-term projects without damaging paper. Durable 0.4 mm tip: Each pen features a soft, durable 0.4 mm tip that delivers precise, consistent lines and a smooth glide thanks to premium materials. Two-pointed marking design: Dual-tip construction lets you create standard lines and roll-end curve effects; designed to produce clean start-and-end points for highlights and decorative edges. Curve and lace line options: Multiple pre-designed curve line types and a unique lace-style pattern let you highlight important details and add attractive, consistent decorations with a single stroke. Quick-drying performance: Fast-drying ink prevents smears on contact and keeps writing clear and crisp—ideal for fast note-taking and layered work. Versatile color set: The Curve Highlighter Set includes a variety of colors to organize information visually and support creative projects. How it solves problems Prevents messy notes: Fast-drying, non-bleeding ink keeps pages clean and legible. Improves clarity and organization: Multiple colors and curve/lace options make it easy to emphasize key points and separate information visually. Supports both fine detail and decorative work: The 0.4 mm tip and two-pointed design allow precise markings and attractive embellishments without switching tools. Materials and compatibility Ink: Acid-free, non-toxic, quick-drying. Tip size: 0.4 mm soft, durable tip. Body and mechanism: Made with premium materials for smoother glide and consistent ink flow. Works well on: standard paper, notebooks, planners, scrapbooks, study guides, and most art papers. How to use For highlighting: Put the pen under the text and glide smoothly along the line to create clear, quick highlights. For decorative edges: Use the two-pointed/curve functions to draw lace-style borders or curved accents around headings. For detailed notes: Use the 0.4 mm tip to underline, annotate, or add fine symbols without overpowering the page. Practical applications Study and revision: Color-code lecture notes, textbooks, and flashcards to improve retention and focus. Planning and journaling: Create neat headers, decorative dividers, and color-coded schedules in planners and bullet journals. Kids’ crafts and art projects: Safe, quick-drying ink and multiple pattern options make it easy for children to add detail and color without mess. Brand and set information Product: Curve Highlighter Set by Smilevol. Includes: Multiple highlighter colors and curve-line options designed for marking, decorating, and studying. Small, precise, and designed for everyday use—Smilevol curve pens combine safe ink, a durable 0.4 mm tip, and versatile line styles to keep notes tidy and creative projects consistent.