The Sun-Star dual-tip Ninipie is a highlighter and fineliner combo that allows you to have the perfect tool at your fingertips without having to switch up your pen!
The two tips are located conveniently right next to each other.
Highlight with one side of your tip, and rotate the pen in your hand when you need to underline.
OR use the two tips together for a double outline effect!
You simply turn this highlighter as you use it to switch between the marker and pen, rather than having to switch back and forth between two different pens.