Inclusion Criteria:  typically smoking menthol cigarettes Non-Hispanic African American or white/Caucasian, ≥21 years old, smoke 5-30 cigarettes per day, daily cigarette smoker smoked at current rate for at least 6 months interested in trying e-cigarettes not interested in or unable/unwilling to quit cigarette smoking willing to complete one in-person study visits  Exclusion Criteria:  Interested in quitting cigarettes in the next 30 days use of smoking cessation pharmacotherapy in the past 30 days use of non-cigarette tobacco products in the past 30 days use of e-cigarettes >5x in lifetime use of e-cigarettes ≥4 of the past 30 days weight < 110 lbs uncontrolled hypertension (systolic BP ≥ 180 or diastolic BP ≥ 105) pregnant, plans to become pregnant, or breastfeeding live >10 miles from study site (Fairway CRU) current enrollment is a research study or program that aims to alter tobacco use