A vape pen (or “vaporizer pen”) is a small, cylindrical-shaped device that uses vaping technology to replicate the smoking experience (more on that later). This type of vaporizing device is typically slightly larger, circumference-wise that a cigarette or the the average ball point pen, but is still small enough to fit easily in the palm of the hand. Vape pens are often stylized to resemble pens, which is why they have come to be called “vape pens.” This design, plus their small size makes them very discreet. The can easily be placed in a pocket and no one can tell it’s there.