The Montecristo Open Slam measures 5 3/5 inches long by 52 ring gauge, a unique format in Cuban factories known as Idilicos. It’s the fifth cigar in the Montecristo Open line, and the first new size since Open debuted in 2009. They were originally marketed by Habanos to be “enjoyed al fresco,” with emphasis on the outdoor sporting life, and are purportedly milder than Montecristos from the standard range.