Football Fanatics reports that a size 48 Nike football jersey fits a 51-inch chest. The jersey’s back length measures 32.5 inches. A size 48 jersey is considered extra-large.
Throughout the years, professional football jerseys have altered drastically regardless of size. During the 1920s, jerseys were primarily constructed from dense materials such as wool. In the 1930s, teams wore shirts with basic colours and identifying numbers. Throughout the next two decades, teams gradually settled on distinctive team colours for their jerseys, despite frequent colour changes. The NFL allows teams to use alternate jerseys no more than three times every season in the 21st century.