... not contain any harmful substances and it does not produce second hand somke.Unique flavors: USA MIA, Tobacco, Strawberry, Mint, Vanilla, Coffee ... , Chocolate, ...... 1. Contain rich active substance of EGCG extracted from green tea.2. Effectively remove oxygen free radicals in lungs ... .5. Be with the same taste of smoking but free from Nicotine.6. Various kinks of tastes are available.