 Subjects checked in to the clinic on Day -2 and continued to smoke their usual brand cigarette ad lib through the evening of Day -1 upon request to the clinic staff. Baseline assessments were made from the morning of Day -1 through the morning of Day 1 prior to the start of randomized product use. On the morning of Day 1, subjects were randomized into one of the study arms noted above and post-baseline assessments were made through the morning of Day 6. 