lets talk cigar sizes: Cigars are measured with 2 measurements: 1. The length (in inches) 2. The ring gauge (Diameter of the cigar in 64ths of an inch). Now that's the easy part. The different sizes also have names associated with them. Attached is a chart to help distinguish the different sizes and shapes. The rules regarding the sizes and names are not steadfast, nor is the chart a complete list, but its a good place to start.