What is a gel pen:
Gel pens (also known as gel rollers) are technically related to ballpoint pens and rollerball pens, and are among the most popular pens in the world because they offer a very smooth writing experience. This is due to a gel-like ink that is thicker than the water-based ink of an ink roller, but thinner than the ink of ballpoint pens.
What makes gel pens stand out:
Gel pens impress with very high opacity with intense colors. In addition, due to their thick fluidity, gel inks can be provided with particles that, for example, provide glitter effects on the paper.