What is a vape pen?

Vape pens are discreet, pocket sized vaporizers that are powered by a battery and use pre-filled oil cartridges. How do vape pens work? They are closed systems that produce vapor rather than smoke when heated. There are four main parts to a vape pen: the oil cartridge, atomizer heating element, lithium ion battery and mouthpiece. With vape pen in hand you can try out some of these easy vape tricks.