What are the different vape products?

Popular terms for vaping devices include JUULs, e-cigarettes, e-cigs, smokeless cigarettes, vaporizers, vape, vape pens, vapor pens, mods, tanks, cigalikes, e-hookah and hookah pens. These vary widely in size, shape and design. Some look like computer flash drives or highlighters, while others are bulky and box-like.