A device used for medical marijuana, called the “G-Pen,” is becoming popular with teens, MyFoxNY reports. The G-Pen sells for $90 in New York’s East Village, and is also sold online. Less expensive models are also available.

One G-Pen model is called The Game/G-Box, named after the popular rapper The Game, who has a reality show on VH-1. He’s in his 30s, but appeals to a younger audience, the article notes.

The G-Pen looks like a pen or electronic cigarette. It doesn’t produce smoke or an odor, which makes it appealing to teens who want to use marijuana without attracting attention.