What is puff bars ? A Puff Bar is a disposable vaping device that comes in a variety of different flavors. This includes best-sellers like banana ice, cool mint, and also O.M.G. It’s considered an all-in-one product because you don’t need to refill it, charge it, or worry about different parts. A Puff Bar comes ready to go straight out of its packet. It’s the perfect device to consider if you’re looking for a healthier alternative to smoking.