E-Cigarettes, also called personal vaporizers, vape pens, e-cigars, e-hookah, vaping devices, mod systems or pod systems, are products that produce an aerosolized mixture containing flavored liquids and nicotine that is inhaled by the user. E-Cigarettes can resemble traditional tobacco products like cigarettes, cigars, pipes or common gadgets like flashlights, flash drives or pens. 

These products have grown rapidly, particularly among youth and young adults. Youth use of e-cigarettes is a significant public health concern.