Cigarettes are generally more uniform in size and contain less than 1 gram of tobacco each. Cigars, on the other hand, can vary in size and shape and can measure more than 7 inches in length. Large cigars typically contain between 5 and 17 grams of tobacco. It is not unusual for some premium cigars to contain the tobacco equivalent of an entire pack of cigarettes. U.S. cigarettes are made from different blends of tobaccos, whereas most cigars are composed primarily of a single type of tobacco (air-cured or dried burley tobacco). Large cigars can take between 1 and 2 hours to smoke, whereas most cigarettes on the U.S. market take less than 10 minutes to smoke.