Having trouble with drawing wavy lines using normal colored pens Try this specially made roller marker - create various elegant mark lines with one single pull, none of the trouble, all of the fun.
The Curve Shapes Linear Color Highlighter Pens have a scroll wheel design, roller end for drawing mark lines. Combine them you’ll get a great tool for your study & artwork.
This Linear Color Pens is Available in 6 Well-designed Curved Lines. 6 Different Curves Can Be Drawn, Heart/Flower/Curve/Dotted Line/Slash/Dot.
The Curve Highlighter Pen Set, All Quick-drying Ink, Dries Quickly and Writes Clearly and Smoothly. You Only Need to Place the Colored Curve Pens Under the Text You Need to Mark and Slide Pens Gently.
This Colored Writing Markers for Children Set Makes Smilevol Markers Easy for All the Family to Use for Card Making, Crafts, Coloring Books, School Projects, Diy Letters, and More.