Tag Size: M Chest - armpit to armpit, lying flat - 20.5" Length - top of shoulder, at neckline to bottom of shirt - 26.5" The Chicago Cubs are an American professional baseball team based in Chicago, Illinois. The Cubs compete in Major League Baseball (MLB) as a member club of the National League (NL) Central division. The team plays its home games at Wrigley Field, located on the city's North Side. The Cubs are one of two major league teams in Chicago; the other, the Chicago White Sox.