Know the facts about e cigarettes 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, what are e cigarettes and how do they work Freeton Premium Disposable E cigarette Brand Notes from the Field: E Cigarette and Nicotine Pouch Use Among Middle and High School Students United States, 2024 MMWR