E cigarette use to reduce cigarette smoking may not increase nicotine dependence Penn State University Aegis Solo 3 Geekvape Unboxing et Tutoriel FR Teens using e cigarettes show evidence of same toxic chemicals as smokers: Study ABC News Electronic cigarettes (e cigarettes) are sometimes called e cigs, vapes, vape pens, and electronic nicotine delivery systems (ENDS). E cigarettes come in many shapes and sizes. Most e cigarettes contain nicotine. Get the facts about e cigarettes,