A disposable CBD oil pen comes with a pre-charged battery. Folks inhale through the mouthpiece, and the atomizer heats up the cannabis vape pen to vaporize the oil. Picture a modern hookah in the shape of a small and skinny writing pen. People can carry their handy CBD vape devices in their pockets and purses, if not keep a Just CBD vaporizer pen in the drawer at home or in the office. Consumers tend to love the versatility of a cannabis oil vape pen.